Updated

Turkey's state-run news agency says authorities have removed another 25 senior police officials from duty amid accusations from opposition parties that Prime Minister Recep Tayyip Erdogan's government was trying to obstruct a corruption investigation that has targeted his allies.

Twenty-four people, including the sons of government ministers and a state-owned bank's chief, have been arrested as part of the probe which Erdogan has denounced as a dirty plot to damage his Islamic-based government.

The Anadolu Agency says Sunday 25 department chiefs, commissaries and their deputies at the Istanbul police headquarters were dismissed. Dozens of others have been removed from duty since the probe was launched earlier in the week.

Anadolu said the government has also barred journalists from entering police buildings unless invited for news conference.