The arrested aides of Khalistani leader Amritpal Singh need to be kept in high-security jails outside Punjab after being charged under the stringent National Security Act, or NSA, as there is high risk of them trying a jailbreak if kept in Punjab, intelligence sources have told NDTV. The members of "Waris Punjab De", a radical organisation started by actor and activist Deep Sidhu and now headed by Amritpal Singh, would have also radicalised other jailed criminals and joined hands with the so-called Anandpur Khalsa Fauj, or AKF, the sources said, asking not to be named.