Two passenger trains collided in southern Pakistan today, killing at least 40 people<b> </b>and injuring dozens more.<br />'' <br />''Officials said that one train travelling in Sindh province had derailed and landed on another track. A second train packed with passengers then collided with it and overturned.<br />''         <br />''Rescue teams took the injured to nearby hospitals and it is thought that several are in a critical condition.<br />'' <br />''Pakistan has seen a string of deadly train accidents over the past years. Between 2013 and 2019, 150 people died in such incidents, according to local media reports.<br />'' <br />''A senior official in the Ghotki district, Usman Abdullah, told Reuters news agency, that it was hard to know how many people were still trapped in the train. Prime Minister Imran Khan said he was shocked by the accident and promised a full inquiry. Hospitals in the area have been put on emergency to deal with the casualties.<br />'' <br />''The accident happened early on Monday when the Millat Express coming from Karachi derailed, falling onto another track. The Sir Syed Express coming from Rawalpindi collided with it and overturned.<br />'' <br />''<span style="color: #222222;">Local media have cited officials as saying that a relief train has been dispatched to the crash site while helpline centres have been set up for passengers.</span>