BOSTON – The Department of Justice, alongside our law enforcement partners, has been actively investigating the facts and circumstances surrounding the mass shooting at Brown University and the homicide of an MIT professor in Brookline, Mass. The investigation into these horrific acts remains ongoing.

As part of the investigation on Dec. 18, 2025, investigators executed a federal search warrant at a storage facility used by Claudio Manuel Neves Valente, the Portuguese national responsible for the senseless murders. During the search of the storage facility, the FBI recovered an electronic device containing a series of short videos made by Neves Valente after the shootings.

Today, the Department of Justice is releasing the transcripts of these videos, which have been translated from Portuguese to English. In these videos, Neves Valente admitted that he had been planning the Brown University shooting for a long time. Although Neves Valente stated that Brown University was his intended target, based on initial review of the evidence collected, he did not provide a motive for targeting students at Brown University or the professor at MIT. Neves Valente showed no remorse during the recordings; on the contrary, he exposed his true nature when he blamed innocent, unarmed children for their deaths at his hand and grumbled about a self-inflicted injury he suffered when he shot the MIT professor at close range. Our investigation into the motives behind Neves Valente’s heinous acts will continue.

Based on the evidence seized and analyzed to date, authorities do not believe there are any ongoing public safety threats associated with the shootings. Additional updates will be provided as further information is developed and following appropriate victim notification.

The suspect spoke primarily in Portuguese (translated by federal officials). He expressed no remorse and focused on the logistics of his “long-overdue” plan.

• On Premeditation: > “I had plenty of opportunities, especially this semester… but I always chickened out.”

  “I’ve been planning the Brown University shooting for a long time.” (He specified planning for over six semesters).

• On the Motive: The transcripts offer no clear motive. Neves Valente explicitly refused to provide a “manifesto,” stating he had “absolutely no patience” and was “not going to give you the right to that.”

• On the Victims: He showed a cold indifference, even criticizing the students in the Barus & Holley lecture hall:

  “I am not going to apologize, because during my lifetime no one sincerely apologized to me.”

• On the Outcome: He described his execution of the murders as “a little incompetent” but noted that “at least something was done.” He stated his objective was to leave “on my own terms” and ensure he “wouldn’t be the one who ended up suffering the most.”

Incident Context (December 2025)

• The Attack: On December 13, 2025, the gunman opened fire in an economics review session in the Barus & Holley building.

• Casualties: Two students, Ella Cook and MukhammadAziz Umurzokov, were killed. Nine others were injured.

• The Aftermath: Two days later, Neves Valente killed MIT professor Nuno Loureiro in Brookline, MA. He eventually died of a self-inflicted gunshot wound in Salem, NH, as police closed in.

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