In September 1929, Chief Mutchler ordered a firming up of the Police Departments Rules & Regulations and activities. He ordered his Patrolmen to crack down on all types of violations. Also in 1929 Lawrence Dull and Kenneth Brown robbed a filling station in town and killed the attendant during the robbery. A massive investigation and manhunt was undertaken by the Tiffin Police Department and this lead to their arrest and convictions. Lawrence Dull was later taken to Columbus and was the first person from Tiffin to die by electrocution.