Muzaffarnagar (UP): An illegal arms manufacturing unit was busted as four people were arrested in this connection from a dilapidated college building in Mansurpur area here on Tuesday, police said.

Police seized 10 country-made pistols, 3 rifles, 22 barrels and several other tools from the premises.

According to Superintendent of Police (City) Arpit Vijayvargiya, four people -- Niraj, Ikram, Bhokam Singh and Rakesh -- were arrested.

When questioned, the accused revealed that they were carrying out the work illegally from the old building lying vacant for several years.