The owner and employee of a cyber cafe from where an email claiming responsibility for Tuesday's Jaipur serial blasts was sent have been detained for questioning by the Uttar Pradesh police.

Shyam Bir, owner of the cyber cafe in Sahibabad town, and his employee were taken for questioning late Wednesday night by the Special Task Force (STF) of the police, District Superintendent of Police Deepak Ratan said.

The email was purportedly sent by militant outfit 'Indian Mujahideen' to TV channels yesterday, claiming responsibilty for the blasts and giving details of a bicycle allegedly used in one of the explosions at Choti Chaupad in Jaipur.

Police also raided a house in Baghpat district in its hunt for one Shamim, chief of the western UP unit of Harkat-ul Jehadi Islami (HUJI) of Bangladesh, who is suspected to be involved in the Varanasi serial blasts in 2006. Although the raid yielded no result, police sources said that he is also suspected to be involved in the Jaipur blasts.

The cyber cafe owner's mother Heera Mishra said she was told by police that they were taking her son for questioning for a short after which he would be released.

"But we don't have any information about him. We don't know where and how he and his employee are," she said.

 Senior Superintendent of Police Deepak Ratan said vigilance has been stepped up along the UP-Delhi border and at courts and railway stations in the wake of the Jaipur blasts.