It was just after midnight on Sunday that a violent fire broke out in a pizza restaurant in Strängnäs, south-east Sweden.
When rescue personnel arrived they found a 25-year-old man at the restaurant who was wounded, having received burns.
Police questioned the man on the spot and then arrested him before bringing him to a nearby hospital.
Police are treating the fire as arson and believe the 25-year-old is the culprit. He reportedly has no criminal record and details of his condition were unclear on Sunday afternoon, according to tabloid Aftonbladet.
It took 16 firemen to put out the flames.
“The fire started in the pizzeria, spread up to the attic and then a whole row of houses nearly went up in smoke,” fire inspector Michael Gregebo told news agency TT.
“On Monday, forensic investigators will examine the location,” said police commander Dennis Ejdvinsson.
Fire fighters managed to contain the fire within a few hours and stopped it from spreading to other buildings.
A neighbouring gym hall was evacuated since children attending a sports camp were spending the night there.
By 11am on Sunday, when the fire was finally out, the pizzeria was completely burnt down.
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