Man Sought in Brown Shooting Found Dead, MIT Professor Killing Probed

On the evening of December 18, 2025, law enforcement officers at a storage facility in Salem, New Hampshire found the body of a man later identified as Claudio Manuel Neves Valente, 48. Officials said he had a self inflicted gunshot wound. Valente, whose last known address was in Miami, had been sought in connection with a mass shooting on the Brown University campus earlier in the week that left two students dead and nine others wounded.

The Brown attack, which occurred on a Saturday, prompted a large regional law enforcement response and a coordinated manhunt involving local, state and federal agencies. Authorities swarmed the Salem facility after investigative leads narrowed the search. Officials announced the discovery late on December 18 and subsequently confirmed Valente’s identity. Reporting indicates Valente had been a physics student at Brown around 2000 but held no current affiliation with the university.

Investigators are simultaneously probing the death of Nuno F.G. Loureiro, a 47 year old plasma physicist who led the Plasma Science and Fusion Center at the Massachusetts Institute of Technology. Loureiro was shot at his Brookline home on Monday night and died at a nearby hospital the following day. The Norfolk District Attorney’s Office opened a homicide investigation. Loureiro joined the MIT faculty in 2016 and, according to institutional descriptions, led a laboratory that at one time comprised more than 250 people across seven buildings.

Some law enforcement sources told investigators they believe the man found in Salem was connected to both the Brown University shooting and Loureiro’s killing. Other officials, including representatives of federal agencies earlier in the week, said they had no confirmation of a link and that the two cases remained separate lines of inquiry. Authorities have emphasized that forensic and digital evidence must be fully examined before drawing definitive conclusions about motive or ties between incidents.

Brown University leaders said the campus was reeling from the violence while cooperating with investigators. Brown President Christina H. Paxson noted Valente’s prior time as a student on campus and said it was "safe to assume" he had spent considerable time in a campus building during a brief stint as a graduate student in the early 2000s. MIT officials released statements mourning Loureiro’s death and highlighting his role as a researcher and administrator.

The two incidents have immediate operational consequences for universities and surrounding communities. Campus safety officials and local law enforcement must now balance heightened concern with ongoing academic activities and research operations. The cases will require extensive forensic work, including ballistic analysis, cellphone and financial records review, and interviews that cross state lines. Investigators said they will release further findings as evidence is processed and legal thresholds for public disclosure are met.

As of December 19, 2025, officials said the suspect in the Brown shooting is deceased and multiple investigations continue, with federal and local authorities coordinating to determine whether a single individual was responsible for both crimes and to clarify the sequence of events that led to this week’s violence.