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What to know about MIT professor Nuno Loureiro and the investigation into his shooting

Authorities are searching for a suspect in the killing of , a prominent physics professor at the Massachusetts Institute of Technology who was shot . Loureiro, a married 47-year-old from Portugal, was shot Monday night and died Tuesday at a local hospital.

Authorities have not disclosed a possible motive, and no suspects were in custody as of Wednesday morning, the Norfolk District Attorney鈥檚 Office said.

The shooting in Brookline, Massachusetts, comes days after a deadly attack at another prestigious school in the region, , where police also haven’t identified the suspect who killed two students and wounded nine others. The FBI said it knows of no connection between the two crimes.

Finding solutions to the world’s problems

Loureiro joined MIT in 2016 and was named last year to lead the school鈥檚 Plasma Science and Fusion Center, one of its largest laboratories. The center has around 250 researchers working across seven buildings and focuses on advancing clean energy technology and other research.

The professor grew up in Viseu in central Portugal, studied in Lisbon and earned a doctorate in London, according to the university. Before moving to MIT, he worked at a nuclear fusion research institute in Lisbon.

Loureiro studied the behavior of plasma and worked to explain the physics behind astronomical phenomena such as solar flares. His research, according to his on MIT鈥檚 news site, 鈥渋nvolved the design of fusion devices that could harness the energy of fusing plasmas, bringing the dream of clean, near-limitless fusion power closer to reality.鈥

鈥淚t鈥檚 not hyperbole to say MIT is where you go to find solutions to humanity鈥檚 biggest problems,鈥 Loureiro told the school’s when he became head of the plasma lab. 鈥淔usion energy will change the course of human history.鈥

Sadness and shock over Loureiro’s death

鈥淗e shone a bright light as a mentor, friend, teacher, colleague and leader, and was universally admired for his articulate, compassionate manner,鈥 Dennis Whyte, an engineering professor who previously led MIT鈥檚 Plasma Science and Fusion Center, told a campus publication.

Deepto Chakrabarty, the William A. M. Burden professor in astrophysics and head of the Department of Physics, described him as a 鈥渃hampion for plasma physics,鈥 a valued colleague and an inspiring mentor to graduate students.

MIT President Sally Kornbluth said the 鈥渟hocking loss for our community comes in a period of disturbing violence in many other places.鈥

The Portuguese president鈥檚 office also put out a condolence statement calling Loureiro’s death 鈥渁n irreparable loss for science and for all those with whom he worked and lived.鈥

Killing comes amid search for Brown shooting suspect

The investigation into Loureiro鈥檚 killing unfolds as Brown University, about 50 miles (80 kilometers) away in Providence, Rhode Island, continues to reel from Saturday鈥檚 . As the search for the suspect entered its fifth day Wednesday, authorities urged the public to review security or cellphone footage from the week before the attack, saying they believe the gunman may have cased the area beforehand.

Copyright © 2026 The Associated Press. All rights reserved. This material may not be published, broadcast, written or redistributed.

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