With the Gujjar community threatening a "complete NCR roko" on May 29, the Union Home Ministry on Tuesday reviewed the situation at a high level meeting and put the National Capital Region on high alert.
Home Minister Shivraj Patil chaired the review meeting with Special Secretary (Internal Security) M L Kumawat, where Delhi Police Chief Y S Dadwal was also present.
Patil is understood to have later briefed Prime Minister Manmohan Singh on the prevailing situation.
Sources said that since the Gujjar unrest was fast reaching the NCR, which has already witnessed sporadic protests, the security establishment did not want to leave anything to chance on Thursday.
The Gujjar community has threatened to block traffic in different parts of the national capital that day in support of its demand for Scheduled Tribe status. Presence of a number of Gujjar pockets in the outskirt areas has become a matter of concern in the Home Ministry, they said.
A senior Home Ministry official said all steps have been taken to ensure that Gujjar violence in neighbouring Rajasthan did not have any spillover effect in the NCR areas.
The meeting chaired by Patil also discussed the overall situation arising out of the five-day old Gujjar agitation, which has spread to new areas in Rajasthan.
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.
Police fired teargas shells to disperse hundreds of protesters who put up blockades on the busy Delhi-Jaipur national highway leading to traffic chaos and large queues of buses at Kotputli, 165 km from the capital.