An intruder allegedly assaulted security staff after he was found wandering around the top floor of Dunedin Hospital.
Senior Sergeant Matt Lee said security called the police after removing a 24-year-old man from the hospital about 7.30pm on Tuesday.
The security staff found the man in an area used by the medical school and asked him to leave.
"He became aggressive and was verbally abuse towards them and refused to leave."
As security was escorting him out of the hospital, he grabbed them and pushed them multiple times, Snr Sgt Lee said.
Police later found him a short distance away in George St and arrested him.
He was charged with two assaults and will appear in court at a later date.