Authorities are investigating the fatal shooting of Massachusetts Institute of Technology physicist Nuno F.G. Loureiro, 47, at his Brookline home Monday night [[1]]. The homicide, which occurred just days after a separate shooting at Brown University, has prompted heightened concern over safety at institutions of higher education. Loureiro,a native of Portugal and director of the MIT Plasma Science and Fusion Center,was pronounced dead at a local hospital Tuesday morning [[2]], leaving colleagues and international leaders to mourn the loss of a promising scientist [[3]].
Authorities are searching for a suspect in the shooting death of a Massachusetts Institute of Technology professor, Nuno F.G. Loureiro, a case that comes just days after a separate shooting at another New England university. The homicide is prompting increased concern about safety on college campuses.
Loureiro, 47, a physicist and fusion scientist, was shot Monday night at his apartment in Brookline, Massachusetts. He died Tuesday at a local hospital, according to the Norfolk District Attorney’s Office.
As of Wednesday afternoon, the investigation was “active and ongoing,” and no arrests had been made, the District Attorney’s Office stated. Investigators are currently focused on identifying the shooter.
The investigation into Loureiro’s death unfolds as Brown University, located about 50 miles away in Providence, Rhode Island, continues to grapple with the aftermath of a shooting on Saturday that left two students dead and nine others injured. Details of that shooting remain under investigation. The FBI has said it is not aware of any connection between the two incidents.
Dozens of people gathered outside Loureiro’s building Tuesday night to honor his life and support his family, many holding candles. Neighbors received notices taped to their doors encouraging them to place candles in their windows as a tribute to the professor.
Attendees described a somber scene, with many quietly mourning in the cold weather. Some children even came on scooters from nearby homes to join the vigil.
Most MIT students were on winter break when the shooting occurred, and more than a dozen students on campus declined to comment. Many said they did not know Loureiro.
A 22-year-old student at Boston University, who lives near Loureiro’s apartment, told The Boston Globe she heard three loud noises Monday night and feared they were gunshots. “I’ve never heard anything that loud before, so I assumed it was “shots fired,” said Liv Schachner. “It’s just hard to comprehend. It just keeps happening.”
Loureiro joined MIT in 2016 and was appointed last year to lead the MIT Center for Plasma Science and Fusion, where he worked to advance clean energy technology and other research areas. The center, one of the school’s largest laboratories, had more than 250 people working across seven buildings under his leadership. He was a professor of physics and nuclear science and engineering.
Originally from Viseu, Portugal, Loureiro studied in Lisbon before earning his doctorate in London, according to MIT. He previously worked as a researcher at a nuclear fusion institute in Lisbon before joining MIT. “He illuminated with intensity as a mentor, friend, teacher, colleague, and leader, and was universally admired for his articulate and compassionate manner,” said Dennis Whyte, a professor of engineering who previously led the MIT Center for Plasma Science and Fusion, in a campus publication.
MIT President Sally Kornbluth called Loureiro’s death a “shocking loss” in a statement. The office of Portuguese President Marcelo Rebelo de Sousa also issued a statement of condolences, describing Loureiro’s death as “an irreparable loss for science and for all those who worked with and lived with him.”
Loureiro had expressed hope that his work would shape the future. “It is not an exaggeration to say that MIT is the place to go to find solutions to the biggest problems facing humanity,” he said when appointed to lead the plasma science laboratory last year. “Fusion energy will change the course of human history,” he added.
Portuguese Foreign Minister Paulo Rangel announced Loureiro’s death during a parliamentary hearing, without providing further details.
The Instituto Superior Técnico (IST) in Lisbon, where Loureiro earned his degree and conducted research, remembered him as a “brilliant colleague with whom it was a scientific and personal pleasure to collaborate.” In 2024, Loureiro told IST that “fusion energy will change the course of human history.”
In the United States, Loureiro received the National Science Foundation’s CAREER Award in 2017 and, most recently, the Presidential Early Career Award for Scientists and Engineers in January 2025, awarded by then-President Joe Biden.
