Hundreds of people had to be evacuated after a fire broke out in a 42-storey building in Istanbul.

The blaze in the Polat Towers is thought to have been caused by a technical problem with a section containing air conditioners.

The building is partly residential and partly occupied by shops and businesses.

The fire burned through the building's external wall insulation, although the mayor for the district of Sisli, where the building is located, said the inside was not affected.

Firefighters brought the fire under control and no injuries were reported.