The assailants arrived at the party in several cars and opened the fire after shouting 'kill them all'. At least 18 others were wounded.
Police found out more than 200 bullet casings from the spot and most of them were from .223-caliber weapons. Police has no suspects or information regarding the case, yet.
The number of victims of drug-related violence has shot up and there have been increasing reports of mass shootings at the parties, rehab clinics and pubs.