Rights groups have called for an investigation into the death of Karima Baloch, a Pakistani activist living in exile in Toronto, Canada.
Baloch, 37, a campaigner from the restive region of Balochistan in western Pakistan, was a vocal critic of the Pakistani military and state.
Toronto police issued an appeal after she went missing on Sunday. Friends later said her body had been found.
In 2016, Baloch was named in the BBC's annual list of 100 inspirational women.
Toronto police tweeted on Monday, saying the activist was last seen on Sunday in the Bay Street, Queens Quay West area of the city. The force tweeted again later to say she been "located", without adding any detail.
Friends and fellow activists said her body had been since been discovered, but the cause of death was not immediately made clear.
Baloch's sister told BBC Urdu on Tuesday that her death was "not only a tragedy for the family, but also for the Baloch national movement".
"She didn't go abroad because she wanted to, but because... open activism in Pakistan had become impossible," Mahganj Baloch said.