A cancer survivor bicycling to work for the first time to save on gas was shot and killed, according to Toledo police.

Police Capt. Ray Carroll said 46-year-old David Babcock was seen on a street having a heated argument with another man before he was shot around 5:30 a.m. Tuesday.

"(There were) two people arguing, yelling at each other, then the gun shots went off," said Carroll. "We were given just a vague description (of the suspect)."

Babcock was pronounced dead at an area hospital.

The coroner said Babcock took a bullet to the face that caused massive bleeding and hampered his breathing.

Witnesses told police they saw a suspect run down a street in the mostly residential neighborhood.

The shooter took a ring of keys from Babcock, according to MYFOX Toledo.

No arrests have been made. Authorities don't know the motive for the shooting.

Babcock survived surgery to remove a brain tumor 13 years ago. His fiancée, Rene Long, said he had put lights on his bike and wore a reflective vest so he would be safe on his inaugural, 8-mile ride to his job at Fresh Products Inc., a maker of air fresheners.

"I was so proud of him. He couldn't wait to ride it to work. That was his first day of riding it to work," Long said.

Click here for more on this story from MyFOXToledo.com

The Associated Press contributed to this report.