Trains were rescheduled after seven wagons of a goods train derailed at Naharkatia in Dibrugarh district around 6.40am on Sunday between Naharkatia and Duliajan stations under Tinsukia division of the Northeast Frontier Railway (NFR).

Official sources said running of trains on the Tinsukia-Namrup- Simaluguri main line, which is a single-line section, was blocked.

According to information, the cause of the accident could be mechanical failure of the tracks.

The goods train was repaired on Saturday but went off-guard on Sunday morning.

A team of railway police, including higher officials and senior engineers, immediately reached the spot.

Sources said train services connecting lower Assam would remain suspended for four days till repair of tracks.

According to an NFR official, the trains were either diverted via Simaluguri-Sivasagar Town-Dibrugarh section or partially cancelled.

“We are investigating the matter and our team from Guwahati is coming. Altogether 150 metres of the track were damaged; we are working in full force to clear the track,” a senior officer of the Tinsukia railway division said.

According to an NFR press release, 14056 Delhi-Dibrugarh Brahmaputra Mail will be diverted via Simaluguri-Sivasagar town-Dibrugarh route.