Prime Minister Manmohan Singh on Tuesday reviewed the security situation in the wake of the series of bomb blasts in Mumbai and Srinagar.

The specially-convened meeting at the prime minister's Race Course Road residence was attended by Home Minister Shivraj Patil, National Security Adviser M K Narayanan and Home Secretary V K Duggal.

The meeting is also understood to have reviewed the situation in Jammu and Kashmir where militants carried out a string of grenade attacks within the space of three hours in Srinagar, killing eight persons, including six tourists from West Bengal, and injuring 35 others.

A high alert has been sounded and security beefed up in public places and markets across Delhi on Tuesday in the wake of serial grenade attacks in Srinagar and blasts in Mumbai.

Besides deploying additional police personnel across Delhi, check posts have been set up at all major points in the city, including railway and bus stations, cinema halls and busy market places.

Barricades have also been put up at all entry and exit points of Delhi to keep a vigil and checking of vehicles has been stepped up, Additional Commissioner of Police Deependra Pathak told PTI in Delhi.

City Police Commissioner K K Paul has also asked the public at large to be careful and to inform the police immediately in case of finding any suspicious object.