Cambridge police are on the hunt for a man who allegedly broke into a church, dressed in a priest's robe, and apparently masturbated on the altar. 

Investigators on Wednesday released grainy surveillance images of the suspect, who allegedly defiled the religious shrine at 3:15 a.m. on Sept. 29. at the St. Sava Serbian Church.

The suspect allegedly entered through an unlocked door, police said. 

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"Once inside, the suspect put on the priests clothing and committed a lewd act on the altar of the church," investigators said in a statement on Mass Most Wanted. 

The church has security cameras and has the incident recorded, police said.

The man is described as a white male, in this 20s, with glasses.

Tips can be sent to the Cambridge Police Department at 617-349-9390.