Malegaon, Oct 24 : Anti-Terrorism Squad (ATS) has arrested three persons in connection with the blasts in the powerloom town of Malegaon on September 29.
Earlier, four persons were detained by police from Indore and Dewas and later taken to Mumbai for questioning.
Maharashtra Police suspect the involvement of Hindu Jagran Manch (HJM) in the Malegaon-Modasa blasts, a charge denied by the right-wing outfit.
The HJM said that it has no direct or indirect connection with the blasts.
The blast took place near a hotel in Bhikku Chowk, in which four people were killed and 70 others were injured.
The bomb was placed in a silver coloured Hero Honda Passion motorcycle.
The injured included seven policemen and eleven homeguards, who were hurt in stone-pelting by a mob after the blast. The sub-divisional-magistrate's jeep was also damaged.