The suspect was fleeing police in a stolen truck, going the wrong way on the freeway when he crashed into a motorcycle, killing the driver.
California Highway Patrol investigators released a photo of the man they are hoping to catch. Surveillance video captured images just moments after the suspect ran from the scene of a hit and run.
Police had been pursuing the suspect in a stolen truck when he swerved onto the Interstate 215 transition road going the wrong way.
The suspect slammed the Ford F150 into 57-year-old Mark Offeney while he was riding on his motorcycle.
"I think this person should be accountable for what he did," said Offeney's fiancée Kay Gibson. "He killed another human being for horrible reasons, trying to run from something that he did wrong."
The couple was set to marry on March 21. Instead she spent that day at the cemetery. Meanwhile CHP investigators are hoping the release of the video will help generate new leads.
"We're hoping that the video footage, though we can't get a good look his face, his mannerisms will tip somebody off," said CHP Officer Steven Robbinson. "And somebody might know who he is, and he can turn himself in."
On the day Offney died, he had been running an errand for his fiancée. She said they spent the morning together and went their separate ways, planning to meet up later for a barbecue with friends. But an hour after saying goodbye, Offney was killed.
"I just take it one day at a time," said Gibson. "Some days are okay for me, and some days I don't want to function."
Anyone with information is asked to call San Bernardino CHP at 909-383-4247.