Heard loud noice, then fell from my berth: Passenger of derailed Seemanchal Express

Patna : Passengers on the derailed Delhi-bound Seemanchal Express said that they heard a loud noice first before falling from their berth on a Sunday morning. Most of the passengers were sleeping when the eleven coaches of the train went off track at around 4 AM in Bihar's Vaishali district.
As per current update, seven passengers have lost their lives and hundreds have been injured in the accident.
"I heard a loud bang and fell on the floor of the coach. It was very dark, I couldn't see anything, felt broken glass everywhere," a passenger who survived the train accident told NDTV. "I lifted my father on my shoulders and made him crawl out of the broken window," said the passenger who was going to Prayagraj with his family.
According to the NDRF officials, the coaches were apparently got separated from the engine before getting derailed. The rescue officers had to climb up the coaches, cut through the iron grills to reach the trapped passengers.
The injured passengers have been shifted to the nearby hospital.
The Ministry of Railways expressed profound grief over the tragic accident and informed about the rescue works being carried at the site to bring all passengers to safety.
We express profound grief over the loss of innocent lives in tragic derailment of 12487 Jogbani-AnandVihar Terminal Seemanchal Exp at Sahadaibuzurg in Bihar. Rescue and relief operations are at full swing. Our GM & DRM, NDRF teams, & officials of local administration are at site
— Ministry of Railways (@RailMinIndia) February 3, 2019
All passenger trains on the route have been cancelled or diverted to a new route.