A 28-year-old man who wasn’t supposed to be in any Ohio State buildings was arrested on campus for criminal trespassing.

A professor became suspicious when he heard someone trying to operate a lock on a rarely used door in Baker Systems Engineering on Saturday at about 3 p.m. When a man entered, the professor approached him and the man left, according to a University Police report.

The professor later found out that one of his peers has installed a camera in the Baker suite — which has offices, a kitchen and a central lobby area — to capture the man entering the building. The two reviewed the video and found that the same man had entered the building at least three times and the professor determined that he wasn’t a student or faculty member.

At the same time that a University Police officer came to watch the video with the two faculty members, another officer arrested the man in the basement of Dreese Laboratories, according to the report. The first police officer and the professor then went to the room the suspect had been entering and found a glass with red wine residue, a white wine bottle (that the suspect said contained urine) and a coffee cup with liquid in it.

There was also a locker that opened with a key the suspect had. The locker contained a “large quantity of clothing and personal items,” according to the report. Those items were removed.

The University Police report said it was clear that the man was using the building as his “base of operations.”

The man had received criminal trespassing advisements from University Police in the past, and said he knew he wasn’t supposed to be in any campus buildings when he was arrested.

A father and son were cited for criminal trespassing on Monday for camping on the OSU wetlands area, despite signs that say the activity is prohibited.

A third incident of criminal trespassing occurred on Sept. 26 at about 10 a.m. in Bevis Hall. In that incident, a 29-year-old man who wasn’t affiliated with the university was arrested for criminal trespassing. He had a computer with him.

A male staff member also reported that a door handle in the Physics Research Building was damaged sometime between the evening of Sept. 27 and the following morning.

A 51-year-old man was arrested and charged with obstructing official business and falsification on Sept. 26 at about 11 a.m. He had a traffic citation and gave a fake name to police.

Police were called to Drackett Tower on Sept. 27 at about 2:15 a.m. to check on an unconscious resident.  They found an unconscious student slumped at his desk and found that he had taken Adderall and suspected that he had mixed it with alcohol. He was taken to the OSU Wexner Medical Center.

There were 10 reports of offenses involving underage persons and 59 reports of theft between Sept. 27 and Thursday.