ISLAMABAD (AP) -- Pakistani police say a package containing "toxic" white powder has been sent to the prime minister's office.
Police officer Hakim Khan said Wednesday that the package was sent three weeks ago to Yousuf Raza Gilani.
A member of Gilani's staff says tests showed the powder was "toxic" but didn't say what substance it was or whether it could cause harm with limited exposure. He didn't give his name because he was not an official spokesman for the prime minister.
Police didn't say who is suspected of sending the package.
Islamist militants have carried out scores of attacks against the Pakistani state in recent years, but have not been known to send letters or packages containing toxic material.