Daharki no relation derailment
On 7 June 2021, before dawn, two trains collided near Daharki, in the Ghotki District of the southern province of Sindh in Pakistan, killing at least 65 people and injuring about 150 others. An express train derailed onto the opposite track, and a second express train crashed into the first roughly a minute later.  About six to eight bogies were left "completely destroyed".
Locals rushed to the scene to rescue survivors, hindered by the darkness.  The Pakistan Army, paramilitary Pakistan Rangers, an urban search and rescue team, helicopters, and accident relief trains later joined in the rescue efforts.  An official investigation was ordered to establish the cause of the crash.
An investigation report done by Dr Omer M Qureshi/Automotive Design and Crash-worthiness Research determined that the initial derailment had been caused by the failure of a welding joint.
no relation