Central intelligence agencies will interrogate 'Waris Punjab De' chief Amritpal Singh, who was arrested by the Punjab Police on Sunday and later sent to Assam's Dibrugarh jail.
Amritpal Singh was in constant touch with his colleagues since March and he had been using a Canada-registered number to stay secure from police call-tracing action.
Earlier, when the Punjab Police had initiated crackdown on pro-Khalistan preacher, 'puls aa gayi puls' had become a meme when one of Amritpal's aide made a video of police closing down on him as he ran scared.
Before surrendering to the police, Amritpal Singh addressed a congregation at Khalsa Gurudwara in Rode, Punjab, the birthplace of Khalistani terrorist Jarnail Singh Bhindranwale.
According to sources, the investigation found that Desai had committed the murders because the four jawans were harassing him. The gunman will appear before a Bathinda court later in the day.