Some suspects are being interrogated since last night but no arrests have been made in yesterday's blast which claimed two lives and left 17 injured, a senior official said.

"Police and intelligence agencies are interrogating suspected people, even pilgrims of Bangladesh origin besides investigation by forensic and state CID-Crime branch experts", Additional Director-General of Police (Law & Order) Kanihya Lal told PTI here.

Though the blast site was cordoned off, the Jumma Namaz would be conducted inside the Dargah of Khawaja Moinudeen Chisti, he said, adding preparations were afoot with deployment of armed forces.

The ADG said BSF and RAC (Rajasthan Armed Constabulary) personnel were deployed last night as a precautionary measure.

A high alert was sounded across Rajasthan and security at all religious places enhanced in the wake of terror attack.

An official investigating the case said "seventeen close circuit TVs were installed but they are not working due to differences among khadims and the Dargah diwan".  

Terror struck the shrine last evening when a bomb went off inside the complex killing two persons and injuring 17 others as thousands of Muslims were breaking their day-long Ramzan fast.

A near-stampede broke out soon after the bomb kept in a school bag exploded as people, who were having food after the fast, ran helter and skelter.

The deceased were identified as Saleem of Hyderabad, and Mohammed Shoyab of Mumbai, the ADG said, adding the 17 injured included some pilgrims from Orissa, Gujarat, Maharashtra, and Jammu and Kashmir.Five other persons were injured in melee after the blast outside the Dargah area, he said.