Updated

Activists in Myanmar say police have injured seven people and arrested three others in a new crackdown on residents opposed to a controversial Chinese-backed copper mine project.

The violence occurred Thursday near northwest Myanmar's Letpadaung mine as farmers plowed their land, which was seized for the project.

Environmental activist Han Win Aung says one farmer was shot by police and six others were beaten.

He says police arrested two villagers and one activist.

Another activist, Tha Gyi, says the farmers had been working their land since Tuesday and around 100 riot police and 50 soldiers tried to drive them away.

Local officials could not immediately be reached for comment.

Residents opposed to the project say it causes environmental, social and health problems in the area.