Phone calls made by Atif, the alleged mastermind of the serial blasts in Delhi [Images] and other cities, to three cell phones in Gujarat may hold the key to prove Indian Mujahideen's [Images] role in the recent explosions in Ahmedabad [Images].

The 24-year-old Atif made these calls from his cell phone to persons in Gujarat, whose numbers were under surveillance of the Delhi and Gujarat police and intelligence agencies, a senior Delhi police official said.

"Atif, head of Indian Mujahideen, made calls to three numbers -- 971xxxx204, 971xxxx899, 972xxxx196 -- in Gujarat
and this could establish the links of the outfit in the Ahmedabad blasts which were "disclosed" by those arrested in Delhi," the official said.

The forensic analysis of Atif's phone by the Delhi police also corroborated the statements given by Mohammed Saif, who was arrested last Friday for his alleged involvement in the Delhi serial blasts, that Atif was in Connaught Place for a recce on September 3, he said.

"Atif's phone was traced to Connaught Place area on September 3," the official said.

The technical analysis of the laptop seized from the Jamia Nagar flat, where Atif and others were staying, also showed clippings of the Ahmedabad blasts.

The laptop, believed to belong to Atif, also had photographs of Tauqeer and video clips of the Ahmadabad blasts, which were sent through e-mails to various media organisations.

Investigators said Atif and 11 others had gone to Ahmedabad around July 10 and eight of them returned a week after.

The module again went to Ahmedabad on July 23 and returned to Delhi a day after the July 26 blasts.

During interrogation, the investigators claimed that Mohammed Shakeel, the ideologue of the module, told them that he had planted the bomb in Mani Nagar in Gujarat, the constituency of Chief Minister Narendra Modi [Images].

It was Tauqeer, the Students Islamic Movement of India pointsman in the scheme of things, who arranged base for Atif and others to carry out blasts in Ahmedabad, they said.

However, Tauqeer did not posses Atif's mobile number.

"Atif did not provide his number to Taqueer and whenever he wanted to contact the SIMI [Images] man, he called him from a public telephone booth," an official attached with the probe team said.

Investigators had also seized from Shakeel's possession a copy of a leading weekly with the cover story 'Helpless and
Hapless India' on blasts in the country.