 The Maharashtra ATS also visited Vadodara, Gujarat, as part of their investigations into the attack.Officials of the Special Operation Group (SOG) of the Vadodara police, also a part of the investigation, said the visiting team had specific information about possible links between the Malegaon blast and city.On 4 November, the case heated up with the arrest of serving Lieutenant Colonel Prasad Shrikant Purohit, who was sent to police custody till 15 November.