The court was told that the arms dealer named Zahid provided weapons to the suspects, which also included smuggled firearms.
A customs court has ordered the arrest of the arms dealer and law enforcers are conducting raids in this regard, said officials.
The ATC during the hearing once again remanded the suspect Shiba Ahmed in police custody.
At least 46 people, including men, women and children belonging to Ismaili community were killed when gunmen ambushed a bus in Safoora Goth on May 13, this year.