In an interview with IANS, Khalid, 28, said that he was under a constant "threat" even after being conditionally set free by the Delhi High Court.
The horrific killing took place just after midnight Wednesday in west Delhi's Vikaspuri area when Pankaj Narang and his son were playing cricket inside their house.
The BJP on Friday pledged support to the Peoples Democratic Party (PDP), paving the way for the formation of a new government in Jammu and Kashmir under Mehbooba Mufti's leadership.
India burst with colours and frenzied street dances by thousands of revellers on Thursday as the nation celebrated Holi, a seasonal festival joyously observed by all - young and old, rich and poor, Hindus and Muslims.
Played holi with my family, volunteers, ministers, MLAs, officers, autowallas and my dear junta. Happy Holi
The incident occurred at Sundraiah Vignan Kendram, as Kanhiaya Kumar was beginning his address at the seminar on constitutional rights.