The Centre on Thursday night asked all states to intensify vigil in view of the forthcoming festive season in the wake of the blast in the Sufi shrine in Ajmer.

All states have been asked to maintain a tight vigil ahead of coming festivals, Union Home Secretary Madhukar Gupta
told reporters in Delhi.

With major Hindu and Muslim festivals round the corner starting with Eid-ul-Fitr, Gupta asked the states to maintain
communal peace and harmony.

Asked whether the incident was a terror attack, the Home Secretary said, "This is an unfortunate event to have happened. There has been an explosion. I do not want to pre-judge. Let the investigations be complete."

The home ministry is closely monitoring the incident and is in constant touch with Rajasthan government.