By Pauline Kim and Jason Hanna, CNN

(CNN) - A body found Tuesday in Rhode Island's Providence River has been identified as that of Sunil Tripathi, a Brown University student who had been missing since mid-March, police said.

No foul play is suspected, police said, citing the state medical examiner's office.

It might take two months to determine the cause of death of the 22-year-old philosophy major, said Dara Chadwick of the Rhode Island Health Department.

The identification was made through forensic dental examination, Chadwick said.

His relatives' search for Tripathi was detailed on a Facebook page, "Help us find Sunil Tripathi." They had temporarily taken down the page after they were inundated by ugly comments when he was falsely identified on social media as a possible suspect in last week's Boston Marathon bombings.

Tripathi was last reported seen early March 16, on a security video walking south on Brook Street in Providence, near his home. His last recorded computer activity was shortly before that sighting.