Cambridge police are investigating a reported sexual assault that occurred Friday at around 9:18 p.m. in a Cambridgepark Drive office building. The alert was put out Saturday afternoon.
Police responded to reports of an assault in progress from a security guard doing a regular patrol of the building. He said he heard screams from a floor that is under construction and is supposed to be empty, according to scanner reports. The victim may have worked on a nearby floor, where detectives were processing a restroom crime scene and working with Massachusetts State Police to identify and search for a suspect.
The victim told officers the assailant was a masked man with a knife.
The Middlesex District Attorneys Office has been notified, police said.
Anyone with information about the incident is asked to call (617) 349-3300 or make contact anonymously.
Residents should call 911 immediately if they ever feel threatened or see suspicious activity, police said. A previous attack in the area took place June 24, when a woman fought off a so-called blitz rape at approximately 3:30 a.m. while walking her dog on CambridgePark Drive, police said.
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