There has been a sharp increase in car break-ins throughout the City of Medford in the last week. There has also been reports of stolen cars where the owner has left the doors unlocked and the keys in the vehicle. Most of these incidents have been occurring after midnight. Please do not leave any valuables in your car. Also, do not leave your doors unlocked and your keys in the car. If you see any suspicious please contact the Medford Police at 781-395-1212. Thank-you