Pakistani activists say police have raided a camp set up by landmine victims in the northwestern tribal district of South Waziristan.
Sherzada Mehsud of the civil rights Pashtun Tahafuz Movement (PTM) told RFE/RL that one of its leaders was injured during the raid on September 21.
The protesters later blocked the road between the Makin and Tank areas calling for the head of the local police station be suspended.
South Waziristan police chief Shaukat Ali said he was investigating the case and that he will later share details with the media.
Several landmine victims and civil rights activists have staged a sit-in in the Kotki area of South Waziristan for more than two weeks, calling on the authorities to clear landmines and provide financial assistance and jobs to those wounded by the weapons, as well as compensation to the families of those killed.
Thousands of South Waziristan residents have returned to their homes after a Pakistani military offensive against Islamist militants forced them to abandon them in 2009.
Pakistani security forces say they have begun operations to clear South Waziristan and other tribal areas of landmines that have claimed lives or seriously wounded hundreds of people.