LINCOLN -- Lincoln Police employees are mourning the loss of one of their officers. Sergeant Thomas Hamm has died. Hamm was 53 years old and a 24-year veteran of the Lincoln Police Department. Sergeant Hamm was found dead around 10:30 pm Tuesday in a wooded area near 75th & Panama Road. A news release from Lincoln Police says it appears that Hamm is the victim of a self-inflicted gunshot wound. The Lancaster County Sheriff’s Office is investigating. He is survived by his wife and three daughters.