By Natalie Neysa Alund

OAKLAND -- A 42-year-old Concord man was killed Friday morning when he hit the center divider on Interstate 580 and was then hit by an SUV, according to a spokesman from the California Highway Patrol.

David Rosie was pronounced dead after the crash shortly before 6:30 a.m., authorities said.

CHP Officer Daniel Hill said that according to witnesses, the motorcyclist turned suddenly to the left and collided with the guardrail and center median wall, ejecting him into the number one lane of I-580 near San Pablo Avenue.

He was then hit by a GMC Yukon, which was rear-ended by a BMW. Those drivers were not injured and remained at the scene, Hill said.

When officers arrived, the Suzuki motorcycle was "completely engulfed in flames."

It was first thought an early 2000s blue Chevrolet Silverado pickup truck may have hit Rosie and did not stop, but the CHP said the truck swerved to avoid hitting him and kept going. Hill said investigators would like to talk to that driver.

Officers remained at the scene for more than two hours and three lanes of traffic were blocked during the investigation.

Anyone with information should call the CHP at 510-450-3821 or 1-800-835-5247.

Staff writers Kristin J. Bender and Harry Harris contributed to this report. Contact Natalie Neysa Alund at 510-293-2469. Follow her at Twitter.com/nataliealund.