Around a dozen police officers responded after fears a man was wandering around with a weapon.
Police were called at around 4.30pm on Friday afternoon (September 9) following concerns for the welfare of a person.
The search was initially focused on the Croxley Green area before the man they were looking for was found in Rickmansworth Road in Watford.
At least eight police officers were pictured near the junction with Gade Avenue.
Police have confirmed no weapon was found and there is no suggestion any criminal action was taken against the man.
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Meanwhile, further up Rickmansworth Road, emergency services were dealing with a collision between a grey Range Rover and a pedestrian.
A teenager was taken to hospital with suspected leg injury after the incident which happened by Cassiobury Park at around 4.15pm.
An air ambulance landed in the nearby West Herts Sports Ground, according to a witness.
Rickmansworth Road was closed for a couple of hours while emergency services dealt with the situation, causing a backlog of traffic to where the other police incident was taking place.
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