Photos: Ten coaches of Hazara Express derail in southern Pakistan

At least 30 people were killed and over 80 others have been injured after 10 bogies of Hazara Express derailed on Sunday near Sahara Railway Station in Sindh's Nawabshah district, 275 kilometres away from Karachi, Geo News reported.

Benazirabad Division Commissioner Abbas Baloch a relief train is also about to arrive and emergency has been imposed in hospitals of the district.

Accidents on Pakistan's decaying rail system are common and successive governments have for years been trying to secure funds to upgrade the rail network as part of China's Belt and Road Initiative for infrastructure projects.

Benazirabad Deputy Inspector General of Police Younis Chandio said that nine out of 10 wrecked bogies had been cleared, with injured and deceased being pulled out, according to Geo News.

People on the site and local authorities have shifted the wounded passengers to the People's Medical Hospital in Sindh' Nawabshah, which reportedly can cater to around 1,000 people.

The train operations to and from the interior districts of Sindh were suspended after the train crash, with railway authorities saying that it may take up to 18 hours to restore operations.

The train, comprising 17 bogies with a capacity of 950 passengers in its economy class and 72 in its air-conditioned standard coach, went off track on its way to Havelian from Karachi in district Sanghar, the senior superintendent of police said.

Authorities fear heavy material and life losses as the ill-fated train is said to be carrying a large number of people, even more than its capacity.

A large number of police personnel from the Police Training Center are also present for relief work. Pakistan Army also joined the relief activities at the site of the accident after special intrsuctions issued by the Chief of Army Staff (COAS) General Asim Munir.

At the accident site outside Nawabshah, dozens of cars, ambulances and motorcycles could be seen parked on a road that runs alongside the track.