A Frostburg State University student was arrested Wednesday after allegedly posting the threat "I'm going to start shooting" on a social media application, though police said he told officers he was joking.

Marvin Chijioke Ogu, 21, of Lanham, was charged with Disrupting School Functions and released from jail on his own recognizance. No attorney was listed for him in court records.

FSU police were contacted after someone wrote "At 5:30 tomorrow, I'm going to start shooting" on Yik Yak, an application in which users post anonymously and the messages are seen by others in a specific geographical area. The six-month-old application has gained attention nationally for other anonymous threats and bullying.

The university did not close because officials said law enforcement indicated the threat was not credible and not specific to the college. However, FSU President Jonathan Gibralter said in a message to the community, "While we do not want to allow our campus to be held hostage to anonymous, vague threats, if you feel your personal safety is at risk, you are encouraged to exercise your personal judgment about whether or not to stay on campus for the remainder of the day."

Authorities obtained the IP address of the user who posted the message from Yik Yak and tracked it down to a home, and said the investigation led them to believe Ogu was responsible. He was arrested without incident, and police said no weapons were found and that the student had "no means" of carrying out the threat.

Police said Ogu told them the threat was "made as a joke" and that he had no intentions of acting on it.

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