Authorities say that an explosion in the Sultanahmet district in Istanbul has killed at least 10 people and wounded 15.
Riot police battled with demonstrators in several Turkish cities as mourners buried a teenager wounded in protests last summer.
Hundreds of police and protesters have been injured when a demonstration to halt construction in a park in an Istanbul square grew into mass protests.
Turkey’s government plans to pass constitutional amendments that have pitted it against the judiciary in a week to 10 days.