(CNN) Authorities have released a teenager questioned in connection with the stabbing death of Barnard College freshman Tessa Majors, but authorities could still charge him and another teen, a law enforcement official said Thursday.

The 14-year-old had been located and taken to a precinct in Upper Manhattan, Rodney Harrison, the New York Police Department's chief of detectives, said in a Thursday afternoon tweet.

His attorneys "were present for the entire investigative process," Harrison wrote, adding in a later tweet that the boy was released to his attorneys and the investigation remains active.

A spokesman for Neighborhood Defender Service, which is representing the boy, declined to comment.

Harrison on Friday said that forensic evidence has been collected from the boy. Harrison said there was a court order for the evidence and that he could not go into detail.

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