Gunman in Brown University Shooting Confessed in Videos, Planned Attack for Years

Claudio Neves Valente, suspect in the Brown University shooting in Providence.Providence Police DepartmentThe gunman responsible for last month's deadly shooting at Brown University and the killing of an MIT professor two days later confessed to both attacks in a series of videos discovered by authorities, according to documents released Tuesday.

Transcripts from the videos, made public by the U.S. Attorney's Office for the District of Massachusetts, reveal that 48-year-old Claudio Manuel Neves Valente had planned the Brown attack for at least six semesters before carrying it out.

Authorities found the videos at a storage facility in Salem, New Hampshire, where Neves Valente was discovered dead by suicide several days after the shootings. The exact recording date remains unclear.

The Justice Department translated the transcripts from Portuguese, Neves Valente's native language. Prosecutors said the videos did not reveal a clear motive for the killings.

"I had plenty of opportunities, especially this semester...but I always chickened out," Neves Valente said in one video, referring to the Brown shooting.

In the same recording, he added that his "only objective was to leave more or less on my own terms," describing the attack as "already long overdue."

"To say that I was extraordinarily satisfied, no, but I also don't regret what I did," he said.