Police say the suspects are members of the Mongolian Boys Society gang who thought they were retaliating against rival gang Asian Crips.
Police in California announced on Tuesday that they have arrested six gang members who shot 4 men last month, who gathered in the backyard of family and friends, believing it was a rival gang party .
The victims were murdered on 17 November, when gunmen barged into the back of a Fresno home through an open gate and used weapons to fire at people watching a game of football in the backyard. Four people were killed, and six people were injured.
The six who were arrested were all held on $ 11 million bail, and it is unclear if they have lawyers yet who can speak on their behalf.