The suspect in the deadly mass shooting at Brown University likely died two days before his body was found, according to government officials.

Attorney General John M. Formella and the Chief Medical Examiner shared new information regarding the timeline of Claudio Manuel Neves Valente's death in a press release issued Friday.

The 48-year-old Portuguese alumnus of Brown University is estimated to have “died on December 16, 2025,” according to the statement issued by the New Hampshire Department of Justice, which cites an autopsy report.

Authorities also confirmed earlier reports that “Valente died as a result of a gunshot wound to the head and that he committed suicide.”

During a press conference Thursday, authorities reported that the suspect, who killed two people and wounded nine others on December 13, was found dead from what appeared to be a self-inflicted gunshot wound.

His body was later found in a New Hampshire warehouse.

Brown University President Christina Paxson stated Thursday that Neves Valente attended the Ivy League university between 2000 and 2001, where He pursued graduate studies in the physics department.

The attack occurred around 4 p.m. local time, when the lone gunman opened fire in the building’s hallway and then entered a classroom, where approximately 60 students had just finished a two-hour economics preparation session for the winter exams.

Ella Cook and Mukhammad Aziz Umurzokov were identified by family members as the two students killed.

Assailant and MIT professor studied together

Neves Valente has also been linked to the death of MIT professor Nuno Loureiro.The 47-year-old Portuguese man was shot and killed at his home in Brookline, Massachusetts, on Monday, December 15. Investigators later discovered that Loureiro and Neves Valente knew each other and had studied together in Lisbon, according to the New York Times. After several days of searching, authorities were able to locate Neves Valente thanks to an anonymous Reddit user who saw the suspect walking in the area at the time of the shooting. “I am totally serious,” the source wrote. “Police should investigate a gray Nissan with Florida license plates, possibly a rental. That was the car he was driving.” The individual recalled seeing Neves Valente lock the car and then suddenly back up, which he described as “odd,” prompting him to pay closer attention to the suspect, according to the affidavit. The anonymous source added that they then saw the suspect walk around the block. At Thursday's press conference, FBI Special Agent in Charge in Boston, Ted Docks, said that "although the suspect was found dead tonight, our work is not over."