Twenty-nine police officers have gone on trial in a Turkish prison accused of trying to overthrow the government in the failed July coup.
It is the first trial of alleged plotters to take place in Istanbul since the abortive coup.
Turkey has arrested some 40,000 people and sacked even more after parts of the army and police tried to oust President Recep Tayyip Erdogan.
The four-day trial began on Tuesday amid high security at the large Silivri jail complex on the outskirts of Istanbul.
Twenty-one of the 29 police officers face life terms if found guilty of taking part in the failed coup.
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