At least 1 person was killed in Oakland in the third mass shooting in California in 3 days

(Trends Wide) — Seven people were injured and one person was killed in a shooting Monday night in Oakland, California, police said.

Deputies were dispatched to the 5900 block of Macarthur Boulevard shortly after 6 p.m. to investigate an alert from a ShotSpotter, gunshot detection technology, the Oakland Police Department said in a statement.

When officials arrived at the scene they found “several casings” but no victims, according to the statement. During the investigation, officers learned that there was a shootout between multiple people, police said.

Several hospitals began to alert the police that they had received multiple patients suffering from gunshot wounds and had transported themselves to the hospitals for treatment.

The seven injured people were in stable condition, police said. The identity of the deceased victim is being withheld pending notification of next of kin, they added.

The incident in Oakland was the third mass shooting in California in three days.

Just hours earlier, about 40 miles southwest of Oakland, seven people were killed and one seriously injured in shootings at two locations in Half Moon Bay, authorities said. A 67-year-old suspect is in custody.

And in southern California, 11 people were killed in a mass shooting Saturday night in Monterey Park.