A gas explosion at a highway construction site in Romania early Thursday killed four people and injured five, emergency authorities said.
The blast occurred around 1 a.m. near the eastern town of Calimanesti, the emergency office said in a statement.
It was caused by a “crack of a gas transmission network and occurrence of mechanical sparks” during construction work, spokesman Florin Olaru said.
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Local media reported that workers hit the pipeline with a digger, causing the explosion.
Authorities cordoned off the area about 500 meters from the blast site as firefighters worked to contain the blaze, the statement added.
Four people were found dead on the spot while five with burns were taken to an emergency hospital in Adjud town.