Police searched a building at the Massachusetts Institute of Technology on Saturday before concluding that a report that a gunman was on campus wearing body armor was "unfounded."
MIT had issued a "shelter in place" warning on Saturday and said that multiple law enforcement agencies, including Cambridge Police, had responded to the report.
The Cambridge Police Department said on its website that it had searched the building with "negative results" and then concluded there was no threat to public safety.
"Scene is clear. Call unfounded," the department said.