An activist of the banned militant outfit, Ahle Hadees, has been arrested in connection with the serial blasts in Ahmedabad which was on the edge on Sunday with a live bomb in the city being defused and another three found in Surat city as the death toll rose to 49.

The arrested activist, identified as Abdul Halim and wanted in connection with 2002 post-Godhra riots, was picked up by the police from the communally- -sensitive Dani Limda area in the walled city. He had remained elusive since the riots.

What is Ahle Hadees?

The terror outfit, Ahle Hadees, is an ultra conservative religious group that owes its allegiance to the Wahabi sect of Islam. The Ahle Hadees is known to have founded the dreaded Lashkar-e-Toiba militant outfit in Pakistan that is known to be behind several terror attacks in India.

Many members of this group are also known to be part of the SIMI cadre. Moreover, several Ahle Hadees activists have been accused of carrying out terror acts. On Sunday, a live explosive was found in a garbage can in Amraiwadi area and defused by the bomb detection squad. A bomb kept in a wooden box near a hospital and two car laden with explosives were found in Surat city.

Army staged flag marches in the vulnerable areas in the city to instill confidence among its shaken residents. In New Delhi, Home Minister Shivraj Patil chaired a high-level meeting to review the security scenario in the country and assured all possible help to the Narendra Modi government in its hour of crisis.

Prime Minister Manmohan Singh, accompanied by Home minister Shivraj Patil and UPA chairperson Sonia Gandhi who are to visit Ahmedabad on Monday, was briefed by Patil, National Security Adviser MK Narayanan and top officials of the Home Ministry on the security situation in the country.

Intensifying its probe into the serial blasts, the anti-terrorism squad of Maharashtra police raided an apartment in Navi Mumbai's Palm Beach Road area and seized a computer from which an e-mail was suspected to have been sent to TV channels purportedly by a little-known 'Indian Mujahideen' threatening more blasts in the country.

Terror struck Ahmedabad on Saturday when 16 coordinated serial blasts ripped through the metropolis killing 49 people and injuring more than 150, a day after multiple explosions rocked Bangalore. Several states, including Uttar Pradesh, Madhya Pradesh, Delhi, Himachal Pradesh and Uttarakhand, sounded red alerts heightening vigil in sensitive areas.