Anonymous Reddit Tipster Cracked the Brown University and MIT Shooting Cases

Alexander Smith and Claire Cardona, NBC News:

Online tipsters have had a mixed record when it comes to providing information about mass casualty incidents. But Rhode Island Attorney General Peter Neronha said this Reddit user “blew the case wide open” after posting about their encounter on Saturday with the suspect.

“I’m being dead serious,” wrote the Reddit user, identified in an affidavit as “John,” three days after the shootings at Brown. “The police need to look into a grey Nissan with Florida plates, possibly a rental.”

★ Friday, 19 December 2025