At least four workers were killed and five others were injured as a steam boiler explosion caused a partial collapse at a dye factory in the Gursu district of Turkey's northwestern industrial hub of Bursa.

Bursa Governor İzzettin Kuchuk stated that four workers were killed in the incident.

Firefighters, ambulances and rescue crews from the regional unit of the Disaster and Emergency Management Authority (AFAD) were dispatched to the explosion site.

Rescue crews are still trying to locate whether anyone remains trapped under rubble.

Gursu Mayor Mustafa Ishık said that the factory had nine employees, but said there could have been customers when the explosion took place.

The explosion rocked the Gursu Industrial Site, causing panic among employees and workers in nearby factories.