SAN LEANDRO -- Police on Tuesday identified a second suspect wanted in the Black Friday shooting outside a Walmart that left a man with major injuries and said they are looking for two more.

Investigators are searching for Detwone D. Watson, 29, of Oakland, who police believe was the shooter, Sgt. Ted Henderson said.

Watson is considered armed and dangerous and has an "extensive criminal history," Henderson said. Authorities have issued a warrant for his arrest on suspicion of attempted murder, robbery and two counts of attempted robbery.

Police said four suspects were involved in the incident early Friday at the Walmart on Hesperian Boulevard, near the Interstate 880-Highway 238 interchange. The other two suspects have not been named.

The victim -- Christopher Murillo, 21, of San Lorenzo -- was released Tuesday from a hospital and is recovering at home, Sgt. Mike Sobek said.

He was shot once in the neck, and the bullet exited his body near his shoulder, police said. "It almost hit his carotid artery," Sobek said. "He is lucky to be alive."

Police said Watson and the two other suspects are associates of Tony Phillips, a 20-year-old Oakland man arrested immediately after the shooting when shoppers pinned him down in the store parking lot.

Phillips appeared in a Hayward courtroom Tuesday to face charges of attempted murder and attempted robbery. His next court appearance was scheduled for Dec. 6. He is being held without bail at Santa Rita Jail. Investigators said they do not believe the incident was gang-related. Police have not recovered a gun.

Authorities released a surveillance video that captured the incident at 1:50 a.m. Friday, about four hours after Walmart opened to allow customers an early start on holiday shopping.

Murillo and his two cousins, Javier and Rafael Murillo, had left the store empty-handed because it did not have the video game they were seeking.

They were hanging out next to their car in the parking lot when three robbers confronted them while a fourth man waited behind the wheel of a vehicle, Henderson said.

Watson pulled out a gun and demanded jewelry and cash, and Christopher Murillo complied, handing over $5, police said.

But when Phillips tried to snatch a gold necklace from Rafael Murillo's neck, a fight ensued. Christopher Murillo was shot once during the altercation, Henderson said.

While Phillips was detained, Watson and another suspect left the scene in a late 1990s or early 2000s burgundy two-door Buick Riviera, and another suspect fled on foot, police said.

Police did not know how many Walmart security guards were working that morning, but an "adequate" number was present to close the store temporarily and search for possible suspects, Henderson said.

Anyone with information about the incident may call detectives at 510-577-3237 or the police anonymous tip line at 510-577-3278.

Staff writer Rob Dennis contributed to this report. Contact Chris De Benedetti at 510-353-7011.

Follow him at Twitter.com/cdebenedetti.