A memorial was held at Police Scotland's headquarters to mark the 10th anniversary of the Clutha tragedy.
Ten people were killed on November 29, 2013, when a police helicopter crashed into the roof the the Glasgow pub.
Of the victims, seven were customers in the bar and three were Police Scotland staff - the pilot Captain David Traill and PCs Kirsty Nelis and Tony Collins.
In remembrance of those who died a ceremony was held at Tulliallan on Wednesday.
Chief Constable Jo Farrell laid a wreath at the Scottish Police Memorial, and she was joined by officers, emergency service staff and council representatives.
A private ceremony is also planned to be held at the Air Support Unit base in Glasgow at 10.22pm to signify the exact moment the helicopter crashed.
Chief Constable Jo Farrell said: “The thoughts of everyone in Police Scotland remain with the families and friends of all those who lost their lives and were affected by this tragedy.
“We remember our officers, PC Kirsty Nelis and PC Tony Collins, as well as pilot David Traill, of the Air Support Unit.
"The loss of our colleagues in such terrible circumstances is still felt across the organisation. It’s important we remember them, as well as the loss felt by everyone affected.
“Wednesday, November 29, 2023, will mark 10 years since the tragic events at the Clutha bar.
"It’s a tragedy that Police Scotland will never forget.”
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