Authorities say Friday they are investigating the cause of the blasts which shook the same area of Ankara hours apart on Thursday. A possible malfunctioning of an oxygen tank is believed to have caused the first blast which partly collapsed two stories of a factory. Rescue workers pulled out another body from the rubble there, bringing the death toll to seven.
The second blast sparked a huge blaze that engulfed several workshops and raged throughout the night. Rescue officials recovered four more bodies at the site, increasing the number of fatalities there to 10.