Gunman arrested after Los Angeles grocery store standoff

LOS ANGELES, July 21 (Reuters) - Police in Los Angeles arrested a man who took hostages and barricaded himself inside a Trader Joe's grocery store on Saturday, ending a three-hour standoff during which he fatally shot a woman, authorities said.

The man, who was chased by police after he was suspected of repeatedly shooting his grandmother and another woman in a separate part of the city, crashed his car outside the Trader Joe's, where he exchanged gunfire with police and entered the crowded store.

He was shot in the arm and talked with police over the phone to negotiate a surrender, Mayor Eric Garcetti and police told a news conference.

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The man, aged 28 but not named by police, emerged from the store and was surrounded by police.

"Inside the Trader Joe's the suspect shot a female victim. She was pronounced dead at scene," police said on Twitter.

Once he was in custody, about 20 people who were in the store could be seen spilling out on to the street.

The woman has not officially been identified, but ABC News named her as Melyda Corado, the store manager, citing family sources.

"The suspect at the end asked for handcuffs. He handcuffed himself and then released himself into the custody of L.A. police," Garcetti said.

During the standoff, aerial footage from TV stations NBC Los Angeles and CBS Los Angeles showed people leaving a store window using a rope ladder and police carrying children to safety through a parking lot in the city's Silver Lake neighborhood.

Trader Joe's employee Zach Johnston was among those who escaped shortly after hearing gunshots.

"I was in the back room and all of a sudden I started to see customers spilling through the door going to the back room," he said. "I immediately heard some gunfire, like four pops."

Johnston and about 15 customers and co-workers ran out a back door to safety, he said.

More than an hour after the standoff began, a few hostages were shown on TV leaving the store through the front door. Some said they had hidden in employee areas in the back of the store.

U.S. President Donald Trump said he was watching the situation closely. "Active barricaded suspect. L.A.P.D. working with Federal Law Enforcement," Trump wrote on Twitter before the arrest.

Trader Joe's said in a statement that the incident "has been an incredible trauma."

"Our thoughts are with our Crew Members and customers. Our focus is on doing whatever we can to support them at this time," it added.

(Reporting by Andrew Cullen; Additional reporting and writing by Jon Herskovitz and Rich McKay; Editing by Daniel Wallis, Himani Sarkar, Jason Neely and David Stamp)