The Rangpur Express train’s engine and power car caught fire when it went off the tracks near the Ullapara Railway Station around 2:30pm on Thursday.
"It could take until midnight to clear the tracks and restore the rail links," said Shahidul Islam, chief operating superintendent of the railway authority (west).
No casualties have been reported so far.
Railway Secretary Md Mofazzel Hossain believes there might be a glitch in the signal system on the transferring lines that led to the derailment of the train.
The authorities formed three committees to investigate the accident and were waiting for the reports to confirm the reason behind the accident, he added.
In the wee hours of Tuesday, a train crashed into another while changing tracks in Brahmanbaria’s Kasba, leaving 16 people dead and at least 50 others injured.