The tip of an armed gunman on campus that led to a lockdown at the Massachusetts Institute of Technology last weekend identified a specific person as the alleged gunman and was reported by an Internet relay service, police said Tuesday.
Cambridge police said that the tip was sent to them Saturday morning through a Sprint Internet relay operator. Internet relay services are typically used by people with speech or hearing impairments to allow them to communicate with other people.
"A possible suspect was mentioned and police immediately identified and interviewed him," Cambridge police said in a statement.
Police questioned the man and determined he had no knowledge of the incident and was not involved in making the report.
One the person who made the false report can be located, Cambridge police said they will file charges.
Federal investigators from the FBI and U.S. Secret Service have joined in the search for the person.
Anyone with information can call 617-349-3300.
Follow Michael Naughton on Twitter @metrobosmike.