Sketch released of suspect in fatal shooting of former president George H.W. Bush's cardiologist

Police in Houston released a sketch of the bicyclist believed to have killed a cardiologist who once treated former president George H.W. Bush.

The fatal shooting took place on Friday as Dr. Mark Hausknecht was riding through the Texas Medical Center, according to investigators.

The suspect was wearing a gray warmup jacket, khaki shorts and a tan baseball cap. The sketch, released on Saturday, also shows him wearing glasses. Anyone who believes they have seen the suspect should contact the Houston Police Department at (713) 308-3600.

"This is a crime that doesn't make sense," Houston Police Chief Art Acevedo said Saturday, according to the Chronicle. "We don't even have a motive yet."

Acevedo said investigators are trying to determine Dr. Hausknecht's movements on the day of the shooting.

"We're still hopeful that the community in his neighborhood and on his path to work will all look through their home cameras and business video and review them to see if they see the doctor riding to work — and if they see anyone following him," the police chief said, according to the Chronicle. "The more eyes we have on video cameras, the greater the chances are that we will capture additional evidence."

Dr. Hausknecht treated Bush in February 2000 for an irregular heartbeat after the former president complained about lightheadedness while visiting Florida. He had been in practice for nearly four decades and specialized in cardiovascular disease.

Hausknecht's wife urged lawmakers to enact "sensible" gun laws in a statement about her husband's death.

"'Senseless' has become a trite adjective to describe these tragedies, but what IS senseless is the misguided notion that any society with more guns is a safer society," she wrote. "When students cannot go to school without fear, and teachers need to arm themselves, what has this country come to??"

With News Wire Services