Southbury Police are investigating the theft of a trailer containing more than $3,000 worth of tools from Heritage Village.  The trailer was stolen sometime Saturday into Sunday from Winship Drive.  Police say the trailer has custom shelving interior and aluminum ladder racks.  Southbury Police say neighbors told them during the investigation that they heard banging and people talking in the early morning hours, but did not notify police at the time.  Anyone with information is asked to call Officer Stephen Houle at 203-264-5912.