Eleven workers died in a fire in the Turkish city of Istanbul on Sunday night, according to a Turkish official, according to Xinhua.

Necmi Kadioglu, mayor of Istanbul`s Esenyurt district, said that 11 workers were killed when a fire engulfed a giant tent in which the workers were staying at the construction site of a shopping mall.

A local TV station said that the fire might have been sparked by a short circuit in the mall, which is about 35 km west of Istanbul city center.

The report said that firefighters had already put out the fire.

The cause of the fire is under investigation.