An explosion and fire at a cookie factory in central Greece on Monday killed at least four workers.
Seven others, including a firefighter, were hospitalized after the blast at the Violanta biscuit plant near the city of Trikala, about 320 kilometers (200 miles) north of Athens.
The blast occurred during the night shif. Fire crews battled the blaze for hours before recovering four bodies, all women from the destroyed building.
Police said that investigators suspect the explosion may have originated near the ovens, which operate around the clock. Six workers and one firefighter were being treated at a hospital in Trikala, news agency AP reported.