Ahmedabad : Cracking the Ahmedabad serial bomb blasts that killed 55 persons, Gujarat police on Saturday arrested its mastermind Mufti Abu Bashir and nine others and said that the network of SIMI was behind the explosions.

"We believe that the netwrok of SIMI was behind the blasts.... Indian Mujahideen, which claimed the responsibility of the blasts, is connected to SIMI," Gujarat DGP P C Pande told reporters here on Saturday.

Bashir was arrested in Lucknow on Saturday, he said, adding that he will be brought to Ahmedabad in a day or two and interrogated for more information.

Pande said there are indictions that he might be linked with Hyderabad, Jaipur and Banglore blasts as well.

"on Saturday is the big day for Gujarat police which has been able to crack the Ahmedabad blasts case," said Pande.

Most of the nine people arrested in the blasts case are active workers of the banned organisation SIMI.

The arrests of Bashir and nine suspects was done with the help of Central Intelligence agencies and police of other states, Pande said.

"The planning of the blasts was done in Ahmedabad by the SIMI," Joint Commissioner of Police of city crime branch Ashish Bhatia, who is heading the inquiry of the blasts said.