The Guwahati central jail, where several top leaders of the proscribed outfit United Liberation Front of Asom are currently lodged, has become a venue for its leaders to restart the peace process, albeit with the tacit approval of the government, say their lawyer.According to Bijon Mahajan, lawyer of interned ULFA 'foreign secretary' Sasha Choudhury and 'finance secretary' Chitroban Hazarika, the investigating agency could have asked for further police custody.