The farmers resorted to unprovoked violence and injured many. They damaged several vehicles and other buildings. Many of them were drunk,' Jain said.

The Chandigarh police, assisted by police personnel from Punjab and Haryana, later detained over 40 agitators from the Bharatiya Kisan Union (Ugrahan group).

The farmers, however, claimed that the police charge on them was unprovoked. They said farmers were pulled out of buses and trucks, beaten up and detained.

'A farmer from Bathinda was crushed under the wheels of a bus from which the police violently forced us out,' BKU general secretary Sukhdev Singh told IANS.

The IG, however, said that the youth was sitting on the roof of the bus and was killed when he fell from there.

He said that 16 government transport buses, three Punjab police buses, a number of police and private vehicles were damaged by the farmers. The farmers tried to set some vehicles on fire too.

The violent protesters did not spare a nearby neuro-psychiatry hospital and a government run hotel either, and damaged these buildings too.

Even mediapersons were not spared and at least two of them were assaulted by the farmers. Both were admitted to a government hospital here.

Police resorted to a cane charge, water cannon and tear gas to disperse the violent mob.

Jain said that the Chandigarh police are coordinating with the Punjab police to arrest BKU leaders responsible for the violence in the city Tuesday.

'We will not spare them. They did not spare anyone or anything that came their way,' Jain said.