The social media website Reddit has apologized after its online forums were used to falsely accuse innocent people of carrying out the Boston Marathon bombings. Rumors quickly spread across the Internet last week that one of the Boston suspects was Sunil Tripathi, a student who went missing while on leave from Brown University. Reddit users had started the rumors after posting photos they claimed matched that of one of the Boston suspects. Reddit says it has expressed its regret to the student’s family. Earlier today Rhode Island police said they have pulled a dead body from the Providence River that may be Tripathi’s.