The supplementary charge sheet was filed under the UAPA sections 13 (unlawful activities), 16 (terrorist act), 17 (collecting funds for terrorist act) and 18 (conspiracy).
Ironically, these far-left activists and Islamists had all enthusiastically joined hands with Aam Aadmi Party leaders like Amanatullah Khan, Tahir Hussain to instigate Muslim mobs during the anti-CAA protests.
From the association between Umar Khalid and Tahir Hussain, one can even argue that Umar Khalid had a significant role to play in the murder of Ankit Sharma.