Authorities say the same gunman killed two students at Brown University, murdered an MIT nuclear scientist in Brookline, and then took his own life, as Israel blamed Iran-backed terror patterns and U.S. investigators continue probing motive and warning failures.

Authorities in the United States have confirmed that the same gunman carried out the mass shooting at Brown University in Providence and the fatal killing of a senior MIT-affiliated scientist in Brookline before dying by suicide in New Hampshire. While the operational sequence of the attacks is now established, investigators continue to say the motive remains unresolved.

Israeli officials reacted immediately to the Brookline killing, publicly condemning it and describing the attack as consistent with what they see as a broader pattern of Iran-backed violence targeting Jewish and Israeli-linked individuals abroad. U.S. authorities have not endorsed that assessment and continue to treat the case as a criminal investigation rather than an act of terrorism.

The divergence between the two positions has intensified scrutiny of the shootings, particularly given eyewitness reports from Brown involving Arabic-language utterances, the academic environments involved, and the wider climate of antisemitic agitation following October 7.

Brown University: Victims and the Course Underway

The Brown University shooting took place on December 13 inside an academic building during a final exam review session for an introductory economics course. Students had gathered to prepare for upcoming exams when the gunman entered the room and opened fire. Two students were killed and nine others wounded.

The students who died were Ella Cook, a 19-year-old sophomore active in campus political and community life, and Mukhammad Aziz Umurzokov, an 18-year-old freshman who planned to study biochemistry and neuroscience. University officials described both as high-achieving students with strong academic promise.

The review session was led by a teaching assistant for Professor Rachel M. Friedberg, a senior member of Brown’s economics faculty. Friedberg was not present at the time of the attack. She also holds an academic affiliation with Jewish studies, a fact that drew attention in the aftermath but has not been cited by authorities as a factor in the shooting.

Multiple witnesses told police they heard the shooter shout words they believed to be Arabic immediately before opening fire. Investigators have confirmed that such accounts were recorded, but they have not released the specific words or attributed ideological meaning to them. Officials caution that language alone does not establish motive, religion, or political intent.

Brookline: The MIT Scientist

Two days after the Brown shooting, the gunman traveled to Brookline, Massachusetts, where he fatally shot Professor Nuno Filipe Gomes Loureiro at his home. Loureiro, 47, was a Portuguese-born nuclear and plasma physicist and a senior figure at the Massachusetts Institute of Technology’s Plasma Science and Fusion Center.

Loureiro was internationally respected for his work on fusion energy and for mentoring graduate students and postdoctoral researchers. Police described the killing as targeted but have not publicly explained why Loureiro was chosen or whether the gunman had a personal grievance against him.

Authorities have not identified Loureiro as Jewish, nor have they stated that his political views played any role in the attack. Claims circulating online that he was targeted for pro-Israel beliefs are not supported by official findings.

Was the MIT Scientist Jewish? Why the Question Arose

In the days following the Brookline killing, many people sought to determine whether Loureiro was Jewish. The question arose amid heightened sensitivity to antisemitic violence, the Jewish character of Brookline, and historical awareness that many Iberian Jews bear surnames that are not overtly Jewish.

The surname Loureiro is of Portuguese toponymic origin, derived from the word for laurel tree, and is common throughout Portugal. Historical records also show that Loureiro appears among surnames adopted by some Sephardic Jews during and after the Inquisition, when Jews were forced to convert and later dispersed across Europe and the Americas.

That historical association does not establish modern religious identity. There is no evidence that Loureiro identified as Jewish, practiced Judaism, or was active in Jewish communal life. Authorities and MIT have not described him as Jewish, and no verified biographical source has done so.

At present, the only defensible conclusion is that Loureiro’s religious or ancestral background remains unknown and unproven, and there is no evidence that it played a role in his killing.

Israel’s Response and the Iran Attribution

Israeli officials moved quickly to condemn the Brookline killing, publicly framing it as consistent with what they describe as Iran’s pattern of encouraging and enabling violence against Jews and Israelis abroad. Israeli statements emphasized Iran’s reliance on ideological incitement and deniable actors rather than direct command structures.

Israeli officials stressed that their assessment was a strategic warning, not a final intelligence determination. They cited the proximity of the two shootings, eyewitness reports of Arabic utterances at Brown, and Iran’s sustained incitement against Israel since October 7.

U.S. law-enforcement agencies have not confirmed any Iranian operational role and continue to state that no evidence of direct coordination with Tehran has been publicly identified.

Suspect and Investigation Status

The gunman, Claudio Manuel Neves Valente, a 48-year-old Portuguese national and former Brown University graduate student in physics, was found days later in a New Hampshire storage facility, where he died from a self-inflicted gunshot wound. Investigators linked him to both crime scenes through surveillance footage, vehicle records, and forensic evidence.

With the suspect dead, authorities are reconstructing motive through academic history, personal background, communications, and digital activity. No manifesto has been recovered and no explicit statement of intent has been identified.

Questions About Warnings and Prevention

One issue now being examined quietly by law-enforcement professionals and academic administrators is whether a faster and more detailed all-points bulletin following the Brown University shooting might have altered events in Brookline. Had a comprehensive suspect description and threat assessment been disseminated more rapidly across state lines and academic institutions, Professor Loureiro may have had the opportunity to take precautions that could have saved his life.

The question remains hypothetical, but it underscores how delays in information-sharing can carry irreversible consequences.