The individual accused of the fatal shooting at Brown University and the murder of an MIT professor took his own life days before authorities discovered him in a New Hampshire storage unit, officials confirmed on Friday. Investigators are still piecing together the reasons behind these violent events.

John M. Formella, the Attorney General of New Hampshire, stated that the state’s Department of Justice Office of the Chief Medical Examiner conducted an autopsy on Claudio Manuel Neves-Valente, 48. Neves-Valente had been identified as the suspect in the shooting incidents at Brown University and the subsequent murder of an MIT professor.

The autopsy results revealed that Neves-Valente’s death was due to a self-inflicted gunshot wound to the head, officially classifying his death as a suicide.

Authorities, utilizing forensic evidence and the current progress of their investigation, believe Neves-Valente died on Tuesday, December 16. His body was discovered two days later, on Thursday evening, at a New Hampshire storage facility.

Federal prosecutors in Massachusetts have circulated an image of the man linked to the deadly shootings at Brown University in Rhode Island and the Massachusetts Institute of Technology in Cambridge. (Justice Department)

Neves-Valente was publicly identified by Providence police as the suspect in the Dec. 13 shooting at Brown University, which occurred during a finals week study session and left two students dead, and nine others wounded at the Barus and Holley Engineering Building.

Authorities later confirmed he was also the suspect in the Dec. 15 fatal shooting of MIT nuclear science professor Nuno F.G. Loureiro, who was found shot at his home in Brookline, Massachusetts.

Federal investigators also recovered two 9mm pistols in New Hampshire with Neves-Valente’s body, according to the Bureau of Alcohol, Tobacco, Firearms and Explosives’s Boston office.

The ATF and FBI, working through the Connecticut State Police forensic laboratory, positively matched one of the guns to the weapon used in the Brown shooting. The second gun was matched to Loureiro’s killing, authorities said.

According to Brown University President Christina Paxson, Neves-Valente was a Portuguese national and former Brown student who studied physics from the fall of 2000 through the spring of 2001 before withdrawing from the program in 2003. He had no current affiliation with the university at the time of the shooting on campus.

“I think it’s safe to assume that this man, when he was a student, spent a great deal of time in that building for classes and other activities as a Ph.D. student in physics,” Paxson said. “He has no current active affiliation with the university or campus presence.”

A police vehicle rests at an intersection near crime scene tape at Brown University, Sunday, Dec. 14, 2025, in Providence, Rhode Island, following a Saturday, Dec. 13, 2025 shooting at the university.  (AP Photo/Steven Senne)

Neves-Valente was found dead Thursday evening after law enforcement officers breached a storage unit in Salem, New Hampshire, where he was believed to be hiding. Authorities said he acted alone in both attacks.

During the investigation, law enforcement canvassed neighborhood surveillance video, released images of a person of interest, and initially questioned, but later ruled out, another individual before identifying Neves-Valente as the suspect.

The two Brown students killed were Ella Cook of Alabama and Mukhammad Aziz Umurzokov of Virginia. Several surviving victims remained hospitalized in stable condition.

Split image showing Brown University victims Ella Cook and Mukhammad Aziz Umurzokov, alongside MIT professor Nuno Loureiro, who was killed. (Instagram/elinacoutlakis/GoFundMe/Jake Belcher for MIT)

Sources tell Fox News that investigators are continuing to examine Neves-Valente’s recent movements, including tracing credit card transactions in the days leading up to the attacks. FBI agents are also in Florida, where his last known address was reported, according to sources.

Authorities have not found any writings or documents indicating a clear motive for the shootings.

Stepheny Price covers crime, including missing persons, homicides and migrant crime. Send story tips to stepheny.price@fox.com.