A lawmaker says police fired rubber bullets on protesters who gathered at a roadblock near a copper mine in northwestern Myanamar, injuring seven.

Nine police were hurt in the scuffle.

Khin San Hlaing, a lawmaker from pro-democracy leader Aung San Suu Kyi's party, said the incident occurred in the Monywa division of Sagain region late Thursday.

Tensions have been mounting in the area since police set up a roadblock near a massive copper mine — a joint-venture between a Myanmar military-controlled holding company and China's Wanbao Mining Copper Ltd — earlier this week.

The road is frequently used by residents from Mogyopyin village.