An opposition activist was injured Tuesday night after a group of ruling and opposition party supporters clashed in Phnom Penh’s Meanchey district. In a statement released yesterday, the Cambodia National Rescue Party identified the young man — a photo of whom went viral on Facebook — as 21-year-old Hem Vutha.

“The group of the CPP activists threw rocks at the group of the CNRP activists, who were on the way back home,” the statement reads, noting that Vutha had his head split open.

Chak Angre Leu commune police chief Chum Savuth said hundreds of youth were involved in the fracas, which took police and military police nearly an hour to break up.

Though the CNRP accused the police of failing to staunch the violence, Savuth defended the work of officers.

“The violence wouldn’t have finished if we didn’t take action with them. I don’t know why the CNRP said we did not do anything,” Savuth said, adding that officers, too, were injured.