2 juveniles arrested in shooting near school in Excelsior District

Police investigate a shooting at the June Jordan School for Equity on Tuesday, Oct. 18, 2016.

SAN FRANCISCO (KTVU) -- Police have arrested two suspects in connection with a shooting two days ago that left four students wounded outside a San Francisco school in the Excelsior District, authorities said Thursday.

Authorities declined to identify the suspects because they are juveniles but a source told KTVU that police are looking for two additional suspects. In a written statement, police said the investigation was ongoing. Authorities declined to comment further about the shooting.

The incident occurred shortly after 3 p.m. as students were leaving the June Jordan School for Equity, a high school at Brazil Street and La Grande Avenue.

Three boys were wounded and a girl was critically injured. She was said to be improving although her condition was not immediately clear Thursday.

Police said after the shooting that the incident occurred in the school's parking lot and that the initial call came in at 3:20 p.m. from a school resource officer who said they needed an ambulance. A secondary call came in shortly after that.

The school was placed on lock out so students could not leave the building and outsiders were prohibited from entering the campus.

Police treated the incident, which happened around the school's dismissal time, as an active shooter situation but quickly decided that it was not.

KTVU reporter Tara Moriarty contributed to this report.