The Harvard University Police Department apprehended an individual outside the Fly Club early Thursday morning after three individuals, one of whom allegedly had a knife, reacted violently to a request that they leave the club.

According to HUPD spokesperson Steven G. Catalano, members of the final club called the police when the three men, who were unknown to the club members, prompted a physical altercation after they were asked to leave.

President of the Fly Club Brendan C. McIntee '13 said that HUPD responded to a complaint at the off-campus social club but declined to comment further.

Officers pursued one of the three men on foot until they caught up with him and apprehended him, Catalano said in an emailed statement.

The man did not have a knife, according to a police report, and Catalano said that he was not affiliated with Harvard. Officers issued him a trespass warning for all Harvard University property and released him into the custody of his parents.

—Amy Q. Friedman contributed to the reporting of this article.

—Staff writer Julia K. Dean can be reached at juliadean@college.harvard.edu.