Hundreds of police officers were on the streets of Nottingham throughout Saturday night in an effort to tackle knife crime in the city.
The major operation involved 200 officers as part of a Home Office project targeting 13 to 24-year-olds.
Officers and a specially-trained dog met young people coming off a number of bus routes.
Metal detectors were used in an effort to find concealed weapons while drug testing was also carried out.
A search centre was set up where a full body scanner checked suspects.
Drug dogs were also deployed on the streets and traffic officers used automated number plate recognition technology to identify vehicles wanted in connection with a crime, stolen vehicles and vehicles or motorists driving without insurance.