"The case was earlier registered at Balasore GRPS, District Cuttack (Odisha) vide GRPS Case No.64 dated June 3 regarding the said mishap," an official statement by the CBI read. A CBI probe was instituted in the case in light of allegations that electronic interlocking system of the Coromandel Express had been tampered with. The triple-train accident on June 2 involved the Chennai-bound Coromandel Express, the Howrah-bound Shalimar Express, and a goods train.