New Delhi, Sept. 29 -- Days after a fire in a moving bus near Greater Noida killed nine people, the Supreme Court on Monday sought responses from the Centre and Uttar Pradesh government on how a vehicle with a history of traffic violations and around Rs.1.75 lakh in unpaid challans continued to operate across states, raising concerns over passenger safety and enforcement.

A bench of justices JB Pardiwala and KV Viswanathan directed the UP chief secretary and the secretary, ministry of road transport and highways (MoRTH), to respond on the action taken against the bus driver and registered owner.

"We direct the chief secretary of UP and the secretary, ministry of road transport and highways (MoRTH) to file a response indicating what step...