However, there was no report of any violence.
The traffic on both sides of the highway has been stuck at Panchkula because the road has been obstructed by the agitators, a police official told IANS.
This is for the first time that the agitators blocked the Chandigarh-Shimla highway, the major link to Shimla, Solan and Kinnaur districts of Himachal Pradesh.
The Jat community's pro-reservation agitation in Haryana continued for the eighth day on Sunday. (IANS)