Vallejo police received calls about a shooting at 4:42 p.m. in Fordham Circle in North Vallejo.
Arriving officers found the shooting scene, but no victim. Officers then learned a friend had driven the victim to the Sutter Solano Medical Center in Vallejo with multiple gunshot wounds, police said.
The man had been taken to the hospital in critical condition and succumbed to his injuries about an hour and a half after he arrived at the emergency room, according to police.
He was identified as Danel Lashwan Stevens, from Vallejo, according to police.
An autopsy is scheduled later this week.
No suspect information was immediately available.
Anyone with information about this homicide is asked to call Vallejo police Detectives Todd Tribble or Bill Badour at (800) 488-9383.
This is the first homicide of the year within city limits, according to police.
On the evening of Jan. 31 in unincorporated Vallejo 38-year-old Dorian Walls, of Vallejo, was found in a driveway in the first block of Reis Avenue shot multiple times. He was pronounced dead at the scene.
The Solano County Sheriff's Office is investigating that murder.