The 4-year-old boy killed in a hit-and-run crash last week was identified Sunday as Christopher Rowe of Santa Rosa.

He was with his mother, Michelle Rowe, 45, and two sisters, ages 6 and 4, about 6 p.m. Thursday when he was struck in a crosswalk at West Ninth Street and Rockwell Place, Santa Rosa police said.

Christopher was taken to a Santa Rosa hospital and later flown to Oakland Children's Hospital for treatment. He died Friday.

His family could not be reached for comment Sunday evening.

Police on Thursday arrested Marcos Lopez Garcia, 22, on suspicion of felony hit and run.

He was identified after witnesses gave police the description of a vehicle that drove through the crosswalk near Jacobs Park and struck the boy, officers said.

Another witness saw the vehicle at nearby Finley Park, where the driver was peeling identifying decals off the rear window, police said.

The driver was then picked up by a woman in a silver Volvo sedan and left, the witness told police. The witness provided police with a license number for the Volvo, and they located Garcia standing next to it outside a Sonoma Avenue apartment about 8 p.m. Thursday. He admitted being involved in the earlier hit-and-run, investigators said.

Garcia was booked into Sonoma County jail, where he was being held on $500,000 bail. Garcia didn't have a license and had two prior arrests for driving without a license, police said.

The woman who picked up Garcia at Finley Park was located and interviewed but not arrested, they said.

The Santa Rosa collision was the second fatal hit-and-run crash in Sonoma County in five days. On Aug. 14, a 63-year-old San Francisco man was struck and killed as he was jogging along River Road near Forestville.

Don Andrew Casper, a prominent Bay Area Republican and a member of the San Francisco Civil Service Commission, was running near Odd Fellows Park when he was hit about 7 p.m.

The driver of the suspect vehicle, a white Ford pickup with an extended cab, remains at large and authorities are still seeking his or her identity.