India, Oct. 18 -- Nine persons have been arrested in connection with Wednesday's violent attack on a police convoy in Assam's Baksa during the transfer of five accused in the Zubeen Garg death case, police said adding that the assault was a well-planned operation monitored from Bengaluru.

Senior superintendent of police (SSP), Baksa, Ujjal Pratim Baruah, said on Saturday that most of those arrested have a criminal history and are being investigated thoroughly.

"They created a WhatsApp group and tracked the police convoy's movement minute-by-minute before launching the attack," Baruah said.

Following Zubeen's death in Singapore on September 19, the Assam Government constituted a Special Investigation Team (SIT) under the supervision of ...