The violence marked the third deadly mass shooting in the United States over the past two weeks.
Los Angeles:
Police in the Californian city of Orange reported a shooting on Wednesday with multiple victims at the scene including fatalities, and local news media outlets said four people were killed before a suspect was arrested.
Few official details of the violence in the city south of Los Angeles were immediately available, but the Los Angeles City News Service (CNS) and television station KNBC-TV reported that in addition to the four dead, two people were wounded by gunfire.
Reporting the incident on its official Facebook page, the Orange Police Department said its officers arrived at about 5:30 p.m. local time as shots were being fired and located multiple victims at the scene including fatalities.