Four people were killed and around 100 injured in an explosion that rocked a fireworks factory in northwestern Turkey on Friday, the Turkish health minister said.
Interior Minister Suleyman Soylu said three factory workers were still missing, adding that the resultant fire had been brought under control.
Some 85 ambulances and two helicopters were among emergency vehicles sent to the complex, the Health Minister Koca wrote on Twitter.
Video footage obtained by Reuters showed smoke billowing from the complex as firework explosions rang out and a huge plume of smoke rose into the sky. The initial blast was heard up to 50 km away, state-owned Anadolu news agency said.
It was not immediately clear what triggered the blasts. Reports said the factory was situated away from residential areas.