Tahir Hussain Minhas, Saad Aziz, Mohammad Azfar Ishrat and Haafiz Nasir alias Yasir were brought to the court premises under stringent security measures.
ATC granted 14 days’ phyical remand of the accused to police.
The accused allegedly involved in deadly attack on a bus of Ismaili passengers on Wednesday May 13, in which 47 persons including women and children were killed and scores of others were injured.
Chief Minister of Sindh Syed Qaim Ali Shah in a press conference on Wednesday announced the arrest of the accused, which also said to be involved in other heinous crimes in Karachi.