New York: Pakistan-based terror group LeT's technology chief Zarrar Shah and his fellow militants continue to direct terrorist activity from behind bars under ISI's watch, setting up in jail a control room like the one in Karachi to oversee the 26/11 Mumbai attacks, a report said.

A report in Frontline titled 'The Hidden Intelligence Breakdowns Behind the Mumbai Attacks' says six years after the 26/11 attacks that brought Mumbai and India to a standstill, the masterminds are still "at large in Pakistan protected by the ISI, an intelligence service that is nominally a US ally."