Body found at Smithville Lake in western Mo.

LIBERTY, Mo. -- Authorities are investigating the death of a man whose body was found at a western Missouri lake as a possible homicide.

The Kansas City Star reported the victim is believed to be 58-year-old Mark Thomas of Liberty. Clay County deputies found the body early Sunday in a park at Smithville Lake. Family members had reported Thomas missing, and his vehicle was found Saturday in a Kansas City, Mo., trailer park.

Kansas City police say the cause of death has not been determined but the case is being investigated as a homicide.