Mobile repairman Mohd Shariq was trained to make cooker bombs, inside the jail. He was an accused in rickshaw blast, last year.

A recent revelation by Nagpur police indicated that Afsar Pasha, an operative of the terrorist organization Lashkar-e-Taiba, trained the accused involved in the Mangaluru bomb blast to prepare crude bombs.

Pasha provided training in making cooker bombs to the accused while they were in prison in Karnataka, police said. Notably, Pasha had received bomb-making training in Bangladesh and had orchestrated a blast in Dhaka. During his imprisonment for terror activities, Pasha formed a group in Belagavi jail, indoctrinating prisoners from the Muslim community to participate in terror missions against India.

Shariq had been previously arrested in December 2020 when pro-terror graffiti was discovered in Mangaluru. But later he was released on bail, in the graffiti case.

https://www.hindustantimes.com/india-news/terrorists-use-jails-for-recruitment-officials-on-alert-101691262250941.html

ISIS module Suhail, Umar, Zahid, Mudasir and Faisal arrested by the Bengaluru Police last month, were recruited and trained by the Kozhikode serial blast accused Naseer inside the Bengaluru Central Jail, in 2020.

https://www.theweek.in/news/india/2023/07/19/arrest-of-five-terror-suspects-in-bengaluru-puts-spotlight-on-radicalisation-in-prisons.html