The Gujjar impasse over ST status demand had its echo in many states where members of the community expressed solidarity with the agitators in Rajasthan even as the National Capital Region was put on high alert ahead of Thursday's proposed 'complete NCR roko'.

In Jammu and Kashmir [Images], Gujjars on Tuesday threatened to stall movement of trains between Delhi and Jammu from Wednesday as part of a stir to "join the ongoing agitation launched in Rajasthan. We have decided to join rail roko andolan and are going to stop rail traffic between Delhi and Jammu from tomorrow," president of Jammu and Kashmir Gujjars United Front Mohammad Anwar Chaudhary said in Jammu.

Haryana Chief Minister Bhupinder Singh Hooda said his government was keeping vigil over the agitation and wanted that the Rajasthan government to resolve the issue amicably and in a peaceful manner.

In Rewari, a district bordering Rajasthan, markets remained closed in solidarity with the Gujjars in the neighbouring state.

Traders and other people took out a procession and submitted a memorandum to the additional deputy commissioner demanding immediate resolution of the issue.

The protesters threatened to block the Delhi-Jaipur National Highway No. 8 at Kashola Chowk on May 29.

In New Delhi, the Union home ministry reviewed the situation at a high level meeting in view of the "complete NCR roko" on May 29.

Sources said since the unrest was fast reaching the NCR, which has already witnessed sporadic protests, the security establishment did not want to leave anything to chance.

The alert sounded for the NCR is in addition to the advisory issued by the Home Ministry last week to Uttar Pradesh, Haryana and Delhi.