(KMOV)-- A pipe bomb exploded early Thursday morning at a power sub-station in Lake St. Louis.
Lake St. Louis Police Chief Michael Force tells News 4 around 3:00 a.m. an alarm went off at the sub-station. When a police officer checked out the location at Dauphine and Savoy near Woodlands Marina, he discovered a hole cut in the fence and sparks coming from an electrical panel.
Damage was minimal and no injuries were reported.
Chief Force says this is the second explosive device placed at this sub-station within the last year. The last case involved a liquid-type device that did not go off. No arrests have been made in connection with that incident.
The Bureau of Alcohol, Tobacco, Firearms and Explosives says that they are offering a reward of up to $5,000 for information leading to the arrest and conviction of those responsible. If you have information, call the Lake St. Louis Police at (636) 625-7995 or the ATF's toll free hotline at (888) 283-2662.
This power sub-station supplies electricity to three quarters of homes and businesses in Lake St. Louis.