Los Angeles schools set to reopen after threat prompted closure

Before you go, we thought you'd like these...
L.A. School District Blamed for Overreacting to Bomb Hoax

LOS ANGELES (Reuters) -- Public schools in Los Angeles were set to reopen on Wednesday, a day after local officials canceled classes for some 640,000 students in the nation's second-largest school district over a threatened attack with bombs and guns later deemed a hoax.

Authorities conducted an extensive search of the Los Angeles Unified School District's more than 1,000 schools and by late Tuesday said the buildings were secure and students were safe to return.

Los Angeles Police Chief Charlie Beck said extra police officers would be deployed at city schools on Wednesday in part to manage jitters following the closure. Officials also said they distributed materials to teachers intended to help them discuss the disruption with students.

See photos of closed schools in Los Angeles on Tuesday:

27 PHOTOS
Los Angeles school closures, threat
See Gallery
Los Angeles schools set to reopen after threat prompted closure
A police officer puts up yellow tape to close the school, as a student walks past, outside of Edward Roybal High School in Los Angeles, on Tuesday morning, Dec. 15, 2015. All schools in the vast Los Angeles Unified SchoolDistrict, the nation's second largest, have been ordered closed due to an electronic threat Tuesday. (AP Photo/Richard Vogel)
Los Angeles School District buses are parked at their bus garage in Gardena, Calif., Tuesday, Dec. 15, 2015. The nation's second-largest school district shut down Tuesday after a school board member received an emailed threat that raised fears of another attack like the deadly shooting in nearby San Bernardino. (AP Photo/Damian Dovarganes)
Los Angeles Unified School District bus driver waits by her bus parked at the bus garage in Gardena, Calif., on Tuesday, Dec. 15, 2015. All Los Angeles area public schools were shut down Tuesday after a after a school board member received an emailed threat that raised fears of another attack like the deadly shooting in nearby San Bernardino. (AP Photo/Damian Dovarganes)
A police officer puts up yellow tape to close the school outside of Edward Roybal High School in Los Angeles, on Tuesday morning, Dec. 15, 2015. All schools in the vast Los Angeles Unified School District, the nation's second largest, have been ordered closed due to an electronic threat Tuesday. (AP Photo/Richard Vogel)

School board member Monica Garcia speaks to media after officials closed all Los Angeles Unified School District due to an electronic threat, Tuesday, Dec. 15, 2015 in Los Angeles. Officials would not elaborate on the threat, saying it was still being evaluated, but said the shutdown came as a precaution. (AP Photo/Nick Ut)

A lock holds the gate shut at Edward Roybal High School in Los Angeles, on Tuesday morning, Dec. 15, 2015. All schools in the vast Los Angeles Unified School District, the nation's second largest, have been ordered closed due to an electronic threat Tuesday. (AP Photo/Richard Vogel)
A police car is parked outside of Miguel Contreras Learning Complex, Tuesday, Dec. 15, 2015, in Los Angeles. All schools in the vast Los Angeles Unified School District, the nation's second largest, have been ordered closed due to an electronic threat Tuesday.(AP Photo/Ringo H.W. Chiu)
Los Angeles Unified School District buses stand idle in Gardena, Calif., on Tuesday, Dec. 15, 2015. All Los Angeles area public schools were shut down Tuesday after a after a school board member received an emailed threat that raised fears of another attack like the deadly shooting in nearby San Bernardino. (AP Photo/Damian Dovarganes)
A vehicle leaves the Miguel Contreras Learning Complex past a sign "No School Go Home" is displayed Tuesday, Dec. 15, 2015, in Los Angeles. All schools in the vast Los Angeles Unified School District, the nation's second largest, have been ordered closed due to an electronic threat Tuesday.(AP Photo/Ringo H.W. Chiu)
A police car is parked outside of Miguel Contreras Learning Complex, Tuesday, Dec. 15, 2015, in Los Angeles. All schools in the vast Los Angeles Unified School District, the nation's second largest, have been ordered closed due to an electronic threat Tuesday.(AP Photo/Ringo H.W. Chiu)
School board member Monica Garcia speaks to media after officials closed all Los Angeles Unified School District due to an electronic threat, Tuesday, Dec. 15, 2015 in Los Angeles. Officials would not elaborate on the threat, saying it was still being evaluated, but said the shutdown came as a precaution. (AP Photo/Nick Ut)
School board member Monica Garcia , right with Los Angeles school police Chief Steve Zipperman speaks to media after officials closed all Los Angeles Unified School District campuses due to an electronic threat, Tuesday, Dec. 15, 2015 in Los Angeles. Officials would not elaborate on the threat, saying it was still being evaluated, but said the shutdown came as a precaution. (AP Photo/Nick Ut)

Los Angeles School District bus drivers gather at a bus garage in Gardena, Calif., on Tuesday, Dec. 15, 2015. All Los Angeles area public schools were shut down Tuesday after a after a school board member received an emailed threat that raised fears of another attack like the deadly shooting in nearby San Bernardino. (AP Photo/Damian Dovarganes)

Los Angeles School District bus drivers walk by their parked vehicles at a bus garage in Gardena, Calif., on Tuesday, Dec. 15, 2015. All Los Angeles area public schools were shut down Tuesday after a after a school board member received an emailed threat that raised fears of another attack like the deadly shooting in nearby San Bernardino. (AP Photo/Damian Dovarganes)
Los Angeles School District bus drivers walk away from their buses parked at a bus garage in Gardena, Calif., on Tuesday, Dec. 15, 2015. All Los Angeles area public schools were shut down Tuesday after a after a school board member received an emailed threat that raised fears of another attack like the deadly shooting in nearby San Bernardino. (AP Photo/Damian Dovarganes)
A sign indicates students that the school is closed at the Ramon Cortines School of Visual and Performing Arts in Los Angeles on Tuesday morning, Dec. 15, 2015. The nation's second-largest school district shut down Tuesday after a school board member received an emailed threat that raised fears of another attack like the deadly shooting in nearby San Bernardino. (AP Photo/Richard Vogel)

Los Angeles Unified School District buses remain locked at their bus garage in Gardena, Calif., on Tuesday, Dec. 15, 2015. All Los Angeles area public schools were shut down Tuesday after a after a school board member received an emailed threat that raised fears of another attack like the deadly shooting in nearby San Bernardino. (AP Photo/Damian Dovarganes)

A sign indicates students that the school is closed at the Ramon Cortines School of Visual and Performing Arts inLos Angeles on Tuesday morning, Dec. 15, 2015. All Los Angeles area public schools were shut down Tuesday after a after a school board member received an emailed threat that raised fears of another attack like the deadly shooting in nearby San Bernardino. (AP Photo/Richard Vogel)
A Los Angeles School District bus blocks the entrance to a bus garage in Gardena, Calif., on Tuesday, Dec. 15, 2015. All Los Angeles area public schools were shut down Tuesday after a after a school board member received an emailed threat that raised fears of another attack like the deadly shooting in nearby San Bernardino. (AP Photo/Damian Dovarganes)
Police officers explain to a parent and her son that his school was closed for the day at Edward Roybal High Schoolin Los Angeles, on Tuesday morning, Dec. 15, 2015. All schools in the vast Los Angeles Unified School District, the nation's second largest, have been ordered closed due to an electronic threat Tuesday. (AP Photo/Richard Vogel)
Police officers turn arriving parents and students away from a closed Edward Roybal High School in Los Angeles, on Tuesday morning, Dec. 15, 2015. All schools in the vast Los Angeles Unified School District, the nation's second largest, have been ordered closed due to an electronic threat Tuesday. (AP Photo/Richard Vogel)
of
SEE ALL
BACK TO SLIDE
SHOW CAPTION +
HIDE CAPTION

The emailed threat, which authorities said was routed through Germany but likely originated locally, came nearly two weeks after a married couple inspired by Islamic State fatally shot 14 people and wounded 22 others at a county office building 60 miles (100 km) away in San Bernardino.

A similar email was sent to New York City's public schools though officials dismissed it as a hoax and kept campuses open.

Los Angeles Mayor Eric Garcetti said an investigation was in its early stages.

"Whether it's criminal mischief, whether it's somebody testing vulnerabilities of multiple cities, we still do not know enough to say definitively," Garcetti told a news conference on Tuesday.

Beck defended the school district's decision to keep students and staff home out of an abundance of caution.

"It is very easy in hindsight to criticize the decision based on results that the decider could never have known," Beck said.

New York City Police Commissioner William Bratton and federal officials who asked not to be identified described the decision in Los Angeles as an overreaction.

The threat, emailed late on Monday night, came from someone who claimed to be a devout Muslim prepared to launch an attack at multiple schools using bombs, nerve gas and rifles, Brad Sherman, a Democratic U.S. congressman from California, told the New York Times.

The United States has experienced a series of attacks at schools in recent years. The deadliest one in the past decade occurred in 2007 at Virginia Tech, where a student gunman killed 32 people.

In the second deadliest, a gunman in 2012 shot dead 20 young children and six educators at Sandy Hook Elementary School in Newtown, Connecticut.

More from AOL.com:
Ryan tells GOP there's agreement on tax and spending bill
AP FACT CHECK: Republican debaters go astray
Government agency's last remnants of 9/11 being given away

Read Full Story

People are Reading