From ABC News.

Two people were killed and six others were injured in a mass shooting at an apparent afterparty in downtown Los Angeles, authorities said.

Around 11 p.m. Sunday, officers saw someone run into a location that appeared to be a party with about 50 to 60 people in attendance, Los Angeles Police Department commanding officer Letisia Ruiz said. One person was arrested for possession of a firearm, police said, and officers locked down the scene, cleared it and left for another call.