The Trumbull Police Department is warning residents that there has been a series of thefts from unlocked vehicles in the last two weeks. Most of the thefts are happening overnight. In addition to stealing items from the vehicles the perpetrators are now using the garage door openers to gain access to garages in order to steal more items. The thefts are occurring in clusters with several vehicles being entered in one neighborhood. Residents are strongly encouraged not to leave valuables or garage door openers in their vehicles and to immediately call the police if they observe any suspicious activity.