A gangster-turned-social activist was among seven booked by the Faridkot police on Saturday for allegedly using a mobile phone inside prison to record a Facebook Live video, The Times of India reported.

Lakha Sidhana had allegedly recorded the video on Friday evening, justifying his activities such as blackening of signboards, for which he was arrested on October 31. Sidhana also urged authorities to take action on crop burning to save people from air pollution. “When we got to know that Lakha Sidhana had uploaded a video clip from inside the jail, I asked the police officials to ask jail authorities to conduct searches,” Faridkot Senior Superintendent of Police Nanak Singh told the newspaper.

Faridkot central jail authorities found two mobile phones in the barrack where Sidhana and six others were lodged.

A case under Section 420 of the Indian Penal Code and Section 42 of the Prisons Act was filed against them, The Tribune reported. An investigation is under way to find out how the prisoners got access to mobile phones.

Sidhana’s arrest had reportedly led to protests in Bathinda last week. His Facebook page, where the video was uploaded, has nearly 29,000 likes.