The mishap occurred close to Sarhari Railway Station.

“Twenty bodies and 50 injured have been taken to Government Hospital, Sarhari,”  Sanghar District Health Officer Faiz Mohammad Mari told Dawn News.

Sanghar Deputy Commissioner Ishaq Ahmed Gaad, who also reached the site, told the newspaper that the injured people were also being taken to hospitals in Shahdadpur and Nawabshah.

Rescue and police officials reached the site of the mishap following the incident.

Pakistan's Federal Minister for Railways and Aviation Khawaja Saad Rafique told Dawn News: "It was either a mechanical fault or it was developed."

Interior Minister Rana Sanaullah expressed grief over the loss of lives in the incident.

"Deeply grieved to learn about the unfortunate #TrainAccident that happened near Nawabshah, my heartfelt sympathies go out to the families of the deceased passengers. The injured should be provided with the best healthcare facilities in the hospitals," he tweeted.

SEO Headline: A passenger train derailed in Pakistan's Nawabshah on Sunday which left at least 15 people dead.