(CBS/AP) BOSTON - Authorities say a body found Tuesday in Boston's Charles River is Jonathan Dailey, an architecture graduate student from North Carolina who has been missing for about a week.
The Suffolk District Attorney's office said the remains were identified from dental records as those of the 23-year-old Charlotte man, who had been studying at Boston Architectural College.
Jake Wark, spokesman for District Attorney Daniel Conley, said Dailey's death remains under investigation and the cause has not been determined.
"We rule out no possibility and we promise Mr. Dailey's family a thorough, comprehensive search for the truth as we investigate his death," he said in a statement.
The body was seen in the river at about 7:30 a.m. by a Boston University rowing coach who notified police. Two sources told CBS Boston that there were chains around the ankles of the body attached to two cinder blocks.
Dailey's roommate and longtime friend Miles Smith, 23, has said he last saw Dailey at their apartment in Boston's Allston neighborhood on Oct. 2, after Dailey returned from work at an American Apparel clothing store.
Smith told reporters he does not believe someone would want to harm his roommate, CBS Boston reports.
"Absolutely not, he was very charismatic, a great friend to all he met," he says. "A tough tease, but everyone knew it was in good nature."
Members of Dailey's family had come to Boston to help search for him.