Police in Delhi have been put on alert after they received inputs from the Intelligence Bureau about the possibility of a terror strike in the near future by Lashkar-e-Tayiba and Harkat-ul-Jihadi-al-Islami militants.

The Intelligence Bureau has informed Delhi Police Commissioner Y S Dadwal and security agencies that they have received inputs that market places and crowded areas may be targeted by LeT and HuJI militants along with local support, a senior police official has said.

"The commissioner had received inputs from the IB that there is a possibility of a terror strike in the capital within two weeks time," the official said.

The inputs come barely a week after security was beefed up in Delhi following a series of explosions in courts in Uttar Pradesh claiming 11 lives.

Following the tip off, Dadwal has issued orders to district deputy commissioners of police to keep a close watch on cyber cafes as investigations in the UP blast case have revealed that an e-mail threatening to blow up courts originated from Delhi.

As Internet and mobile phones were being increasingly used by terrorists to communicate, police have asked cyber cafe owners to maintain not only customer details but server logs too.

Dealers providing mobile connections were also asked to maintain a list of their customers.

Police have already deployed bomb disposal squads, quick reaction teams, dog squads and extra personnel at prominent places like markets, malls, and rail, bus and metro stations. 

An extra vigil is being maintained on the borders, the official added.

Guesthouse and hotel operators have also been advised to keep a tab on their customers, the official said, adding attendants at parking lots have been asked to maintain a list of vehicles using the facility.

Top brass of the city police is constantly monitoring the situation in the wake of the tip off and recent blasts in Ajmer, Punjab and Uttar Pradesh, the official said.

"They have directed officials to intensify patrolling and checkings," the official added.