A train carrying liquid petroleum gas has derailed and exploded in Bulgaria, killing at least five people.

More than 20 people are being treated in hospital with burns and other injuries after the incident in the village of Hitrino, local media say.
(Hitrino, a town of around 800 people, is located in Bulgaria's north-eastern Shumen province, about 60 miles (100km) from the Black Sea.)

The authorities ordered an evacuation as firefighters battled the blaze.

At least 20 buildings were damaged in the derailment and explosion, spokesperson Nikolay Nikolov told Bulgaria's Nova television.

Two tanks hit an electricity line and exploded when the train derailed near the village station at about 05:30 local time (03:30 GMT), according to several reports.

Bulgarian Prime Minister Boiko Borisov, who arrived at the village several hours after the blast, told reporters: "there will be more injured."

Several people suffered burns to more than 90% of their bodies. The Prime Minister appealed to people in the region to donate blood to the local hospital's supply.

Transport Minister Ivalyo Moskovski and other top rail officials were also going to the scene.

May those who died rest in peace and the injured people could get timely cure.