A 19-year old man was charged with robbery after he was chased by police across Lincoln on Friday night.
At around 10pm on May 6 a 23-year-old local man was walking down St Rumbold Street, when he was approached by a group of men.
One of the men held what appeared to be a gun to his face and demanded cash. The offender then left he scene with around £40.
The weapon later turned out to be a replica gun.
Officers attended the scene and after an extensive search of the city, including the deployment of firearms officer, they arrested a 19-year-old local man.
Billy Lee Ansell (19), of no fixed abode, was later charged with robbery and possession of a replica gun in a public place.
He appeared at Lincoln Magistrates Court on Monday morning.
It is thought three or four other men were present during the robbery but there are no descriptions.
Anyone with any information on them is asked to call Lincolnshire Police as soon as possible on 0300 111 0300.