The FBI's Boston division and federal prosecutors in Massachusetts released a detailed assessment on Wednesday concluding that the man suspected of carrying out fatal shootings at Brown University and later at the home of a Massachusetts Institute of Technology professor had planned the attacks over an extended period and was motivated by what investigators described as an "accumulation of grievances" collected throughout his life.
Authorities identified the suspected gunman as Claudio Neves Valente, a 48-year-old Portuguese national. Investigators say Neves Valente entered an engineering building on Brown's campus on December 13 and fired a handgun, killing two students and wounding nine others. Two days later, law enforcement says he shot and killed MIT professor Nuno Loureiro at Loureiro's residence outside Boston. Neves Valente was located dead from an apparent self-inflicted gunshot wound on December 18 at a storage facility in New Hampshire following a multi-state manhunt.
Prosecutors previously released transcripts in January from video recordings Neves Valente made prior to his death in which he acknowledged planning the attack, though those recordings did not include a clear motive for selecting his victims. In the update issued this week, the FBI said its investigators had examined thousands of hours of video surveillance, reviewed 815 videos and 1,327 audio files recovered from the suspect's electronic devices, and conducted more than 260 interviews as part of the probe.
According to the FBI, Neves Valente began planning the attacks in 2022 after renting a storage unit in Salem, New Hampshire. Investigators said they determined he acted alone. The agency described the victims as "symbolic in nature," reporting that Brown University and Professor Loureiro represented, in Neves Valente's view, personal failures and injustices he believed others had inflicted on him over time.
Biographical details outlined by investigators show that Neves Valente had attended Brown about two decades earlier after completing a physics program at Instituto Superior Tecnico in Portugal, the same institution Loureiro attended. He later withdrew from Brown in 2001 and left the United States. While living in Florida, he obtained lawful permanent residency in the United States in 2017. At the time of the shootings, the FBI said he was unemployed.
In its characterization of Neves Valente's state of mind, the FBI stated that his "inflated sense of self" contributed to interpersonal conflicts and to a belief that he had been treated unjustly. The agency further reported that as failures in his life began to outweigh successes, his paranoia increased, compounding an ongoing inability to thrive and leaving him mentally unwell and committed to dying.
The FBI's public account underscores several areas that remain limited in clarity. While investigators have reconstructed a timeline of planning and have cataloged extensive digital and testimonial material, the recordings released earlier did not provide an explicit explanation for why Neves Valente targeted the specific victims he did. The agency's summary frames the attacks as personally and symbolically motivated from the suspect's perspective, rather than tied to an identifiable political or ideological goal.
Context and investigative scope
- The FBI reviewed thousands of surveillance files, 815 videos, and 1,327 audio files recovered from Neves Valente's devices and conducted more than 260 interviews.
- Investigators say Neves Valente began planning in 2022 after acquiring a storage unit in Salem, New Hampshire, and that he acted without accomplices.
- Officials describe the victims as symbolic to Neves Valente, representing perceived personal slights and failures rather than a public or ideological cause.
This account is based on the FBI and federal prosecutors' public statements about the investigation and the materials they reported reviewing.