Lengthy grudge motivated Brown mass shooting, MIT professor killing: Sources
A lengthy grudge was at the heart of the deadly mass shooting at Brown University and subsequent murder of an MIT nuclear physics professor, law enforcement sources told ABC News.
NOTE: The video is from a previous report.
According to the sources, the alleged killer, Claudio Valente, recorded a video in his native Portuguese explaining his motive for opening fire on a study group at Brown's engineering and physics building on Dec. 13, killing two students and injuring nine others, before fatally shooting MIT professor Nuno Loureiro, at his home in Brookline, Massachusetts.
On the video, Valente, a former Brown graduate student, said he was planning the shooting for a long time, according to sources. The violence stunned the nation and launched a six-day manhunt across New England just before Christmas.
Valente died by suicide before investigators found his body in a New Hampshire storage facility.
Federal agents spent the holidays poring over electronic devices found with the body and in an adjacent storage unit. The sources said there are additional devices to access and additional information to be learned about the twin shootings that cast a pall over two of the nation's elite universities.
This is a developing story. Please check back for updates.
