Authorities say they received calls of a shooting just before 1800 local time near the 1900 block of Lucile Avenue.

San Francisco Chronicle reports: 

The San Joaquin County Sheriff's Office said it received reports of a shooting in the 1900 block of Lucile Avenue around 6 p.m., the office said.

Stockton Vice Mayor Jason Lee said, on a social media post, a children's birthday party was the site of a mass shooting, adding that an "ice cream shop should never be a place where families fear for their lives."

However, the Associated Press reported that the shooting occurred at a banquet hall, and that the victims were both children and adults.

The sheriff's office said there are indications that the shooting could have been a targeted attack.

Police and emergency personnel work at the site after several people were shot at a family gathering on Saturday night in Stockton. Stocktivities via REUTERS