NEW YORK, May 1. /TASS/. About 230 people were arrested at student protest rallies at Columbia University in New York on April 30, CNN reported, citing a law enforcement official.

According to the TV channel, police officers used flash-bang grenades to enter a university building where the protesters had barricaded themselves. Sources said that dozens of people had been arrested several blocks from the university.

Earlier, a TASS correspondent reported that the police had set up a perimeter around the campus to hold back the protesters.