The Harvard University Police Department is investigating one burglary and a string of attempted break-ins in the Yard.

During an eventful Thursday morning Harvard Police officers responded shortly before 2 a.m. to four different reports of either attempted entry or unlawful entry, one each at Dudley House, Straus Hall, Wigglesworth Hall, and a fourth location.

While three of these attempts appear to have been unsuccessful, a fourth—at an undisclosed location—resulted in the offender entering an occupied suite and making off with a bag of coins, according to Harvard Police spokesperson Steven G. Catalano.

HUPD detectives are focusing specifically on the following description of the suspect: “a white male in his 30s, with light curly hair, and dark clothing (possibly a Bruins jersey.).”

In an advisory to the Harvard community on Thursday night, Catalano also described the three unsuccessful attempts.

“In two of the incidents an unknown offender attempted to gain entry to both Dudley House and Straus Hall by either removing a screen or attempting to open a window,” he wrote.

Catalano added that, in a third incident, a man was reported knocking on the doors of Wigglesworth Hall. When officers responded, the man had fled.

Catalano wrote that it remains unclear if the incidents are connected. Those with information related to the break-ins are advised to call the Department’s investigation division at 617-495-1796.

—Check back to TheCrimson.com for updates.

—Staff writer Matthew Q. Clarida can be reached at matthew.clarida@thecrimson.com Follow him on Twitter @MattClarida.