Fifteen people, including four children and three firemen, were injured in a fire in a block of apartments in Prague, capital of the Czech Republic on Tuesday, according to local media reports.
Most of them suffered from smoke inhalation or light burns and they have been sent to hospitals, said Czech News Agency.
The cause of the fire is still under investigation.
Firefighters registered several explosions at the spot, which were probably caused by pyrotechnical devices.
Firefighters went to the site at around 7:30 p.m. and the blaze was put under control after 8 p.m.