An attempted armed burglary occurred at the Sigma Phi Epsilon house on High Street late Tuesday evening, Yale Police said.

SigEp brother Michael Jones ’12 said he discovered a man entering the house, and told him he would call the police, scaring him off. Yale Police Department Lt. Brian Logan said officers found a knife discarded in the backyard, which may have belonged to the suspect. Items from brothers’ rooms, including a checkbook, were also found in the backyard.

“He tried to take some things and he left some things as he fled,” Logan said.

Yale and New Haven police have already responded.