FBI Uncovers Videos of Accused's Attack Confession

Federal investigators have uncovered videos in which Claudio Neves Valente, the 48-year-old Portuguese national accused of killing two Brown University students and an MIT professor last month, confessed to long-term planning of the attacks and expressed no remorse for the violence.

On December 13, Neves Valente opened fire in an engineering building on Brown University's campus in Providence, Rhode Island, during a student study session. The shooting killed Ella Cook and Mukhammad Aziz Umurzokov, both students, and wounded nine others. Authorities said Neves Valente, a former graduate student in physics at Brown who had attended the university around 25 years ago, targeted the group in an auditorium where many hid under desks and chairs. Two days later, on December 15, he traveled to the Boston suburb of Brookline, Massachusetts, and fatally shot Nuno F.G. Loureiro, a 47-year-old MIT science professor, at his home. Officials noted that Neves Valente and Loureiro had studied physics together decades earlier at a university in Lisbon, Portugal, though the nature of their relationship remains unclear.

Neves Valente was discovered dead on December 18 in a storage facility he had...