Five people were killed and six people were hospitalised after a retired law enforcement officer opened fire at a biker's bar in California's Orange County. reports said.
Eighteen people have been killed and more than 100 injured in mass shootings in the United States during the Independence Day extended weekend, the Gun Violence Archive portal said on Wednesday.
At least two people were killed and three were injured, including the shooter in the mass shooting, on Saturday night, at the campgrounds near the town of George during the electronic dance music festival in Washington state, CNN reported.
The confrontation began in Albuquerque, New Mexico's largest city, over a picture involving another gang, which then spilled over to the annual Memorial Day motorcycle rally in Red River, a mountain resort.