Police responded after getting reports that a male was seen waving a knife at another boy on Central Road in Partington.
The incident happened sometime during Friday 31st May.
As police arrived the 14-year-old boy tried to get away but police gave chase and caught the teenager and detained him.
Police got the knife of him and was taken away to the nearest police station for questioning.
The teenager was seen waving the knife at another boy on Central Road, we are not sure if he was on his own or part of a group.
Carrying a blade more than 3″ in public is illegal, you will also need a good reason for carrying one and then it will be up to the court to decide.