In the western port city of İzmir, protesters threw fire bombs at AK Party offices overnight and television footage showed part of the building ablaze. Firefighters put out the fire, reports said.

Bus shelters, paving stones and street signs were ripped up by protesters to make barricades that littered a major avenue by the Bosphorus Strait in İstanbul where some of the heaviest clashes took place overnight, and graffiti covered walls.

Roads around Prime Minister Tayyip Erdoğan's office in İstanbul were sealed off as police fired teargas to push back protesters in the early hours of Monday.

In the main street near Erdoğan's office, one demonstrator drove a small mechanical digger towards police lines as other protesters followed behind. At a nearby mosque, medical staff including trainee doctors treated those hurt in the clashes.

Police raided a shopping complex in the centre of the capital Ankara where they believed demonstrators were sheltering, detaining several hundred.