On Thursday, 17 January, 2013, it is believed three men forced entry to a locked office at Doncaster Royal Infirmary Hospital.
No property was taken, however a substantial amount of damage was caused to the door and window of the office.
The three men appear to be in their late teens and are all white. One man was wearing a grey hooded jacket, the second man a black coat and the third man was wearing a dark jacket with a zip up the front and dark trousers. He was also carrying a bag with the strap diagonally across his body.