BEAVER CROSSING, Neb. (AP) — The death of a man found on the bank of the Big Blue River is being investigated as a homicide.

Nebraska State Patrol Investigative Services Lt. Bob Frank says a recent autopsy revealed the man did not die of natural causes. Additional information was not released.

Authorities are seeking help from the public in identifying the body, which was found Wednesday afternoon near Beaver Crossing in Seward County. The body did not have any form of identification, though Frank says the man had a distinctive tattoo of a panther on his upper left arm.