A 17-year-old youth was arrested by a senior off duty police officer following a disturbance in Chester Road in Warrington.
At 8pm on 8 December Chief Superintendent Jon Betts was driving along Chester Road when he came across the teenager in the road with a knife acting in manner which was causing concern.
The officer alerted police colleagues then subsequently seized the knife. He then arrested the teenager and with the help of two people restrained him until officers arrived.
He was arrested on suspicion of affray, possession of a bladed article, criminal damage to a number of vehicles and later, police assault, and racially aggravated public order.
Chief Superintendent Jon Betts said: “You’re never off duty as an officer and always have community safety at the forefront of your mind.
“There were a lot of people around at the time, some of whom offered their assistance. So I’d like to take this opportunity to thank them.”