SAN BRUNO, Calif. (KTVU) - Authorities on Wednesday said a dispute between two groups is what led to a shootout at Tanforan Mall in San Bruno Tuesday afternoon.
According to the San Bruno Police Department, the two groups of people had gotten into an argument on the second floor of the mall.
The dispute escalated and one person from each group started shooting at the other, Cmdr. Jeff Caldwell said in a news release.
A 16-year-old boy sustained a gunshot wound to the abdomen and an Army staff sergeant, who works at a recruiting office inside the mall, rushed to render aid to the victim.
A 12-year-old boy was hit in the leg. Both victims remain in serious condition at Zuckerberg San Francisco General Hospital.
The mall was evacuated and a nearby BART station was shut down as officers searched the area for the suspects, but none were located.
The search for the shooters led to the 12th Street BART station after officers received a report that one of the suspects boarded an Oakland bound train.
BART police said no suspect was ever located.
Wednesday evening, San Bruno police shared surveillance footage of the incident.
"The victims are believed to be associated with the groups engaged in the dispute that preceded the shooting," San Bruno PD said in a statement.
Authorities say the shooting was not a random act of violence.