A police cordon and scene examination tent at the corner of Mull St and Birsa St, Palmerston. Photo: Gerard O'BrienPolice are investigating an unexplained death in Palmerston from early Saturday morning. A police spokesman said they were called to a Mull St address at about 12.15am on Saturday. "Enquiries are under way to determine the circumstances that lead to the death, which is being treated as unexplained at this time," the spokesman said. Several police wearing protective clothing could still be seen at the address by early Sunday afternoon.