Vancouver police have released video of a suspect who hit an officer in the head with a two-kilogram brick during the Stanley Cup riot.

"We are making an appeal today for the public's help to solve a violent assault against one of our members during the riot," said Insp. Les Yeo.

The video shows a large puff of mortar dust as the brick slams into Const. Mike Laurin's forehead during the June 15 riot. Police say the impact is akin to getting hit with a puck at 120 km/h.

Laurin suffered a serious concussion, required 14 stitches to his head and missed work for three months.

"I know someone can tell us who threw the brick at Const. Laurin," said Yeo. "You may have been standing next to this person. You may have heard him or her brag about this afterwards."

More charges recommended

On Monday morning, police recommended 70 criminal charges against 25 more suspected rioters.

"After eight months, we are just as determined and committed as we were the days following the riot," said Yeo.

"I want to make it clear — this is not about those who stood around and watched the riot. All of those we are recommending charges against are alleged to have destroyed property, looted businesses, started fires and assaulted innocent bystanders."

To date, a total of 350 charges have been recommended against 125 suspected rioters. The Crown has approved 129 criminal charges against 47 suspected rioters.