A 34-year-old man was charged with burglary after “piggy-backing” into a locked residence hall at George Washington University early Friday, catching the door behind a group of students entering the building.

According to university police, Mergen Battulga waited outside the West End Residence Hall until a group of residents showed up and then caught the door before it closed behind them. He went to the fifth floor and entered a female student’s room. “When she challenged him, he verbally threatened her,” according to a university statement. He left, and the student called university police.

Battulga then charged down the hallway, “banging and kicking on doors” and asking for someone named “Sharsha,” according to the statement. A fight broke out between Battulga and a group of male students on the hall. He fled and was caught by university and D.C. officers on the building’s second floor. He was taken into custody after a scuffle with officers, according to the statement.

The university asked students to be on the lookout for anyone loitering outside locked residence and attempting to piggy-back their way inside.

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