NEW YORK (AP) — The New York Police Department monitored Muslim college students far more broadly than previously known, at schools far beyond the city limits, including the elite Ivy League colleges of Yale and the University of Pennsylvania, The Associated Press has learned.

Police talked with local authorities about professors 300 miles (480 kilometers) away in Buffalo and even sent an undercover agent on a whitewater rafting trip, where he recorded students' names and noted in police intelligence files how many times they prayed.

Detectives trawled Muslim student websites every day and, although professors and students had not been accused of any wrongdoing, their names were recorded in reports prepared for Police Commissioner Raymond Kelly.