Police rushed to a canal in Hunton Bridge after reports that a gun was pulled out during an argument.
At 5:30pm on Sunday 4th September, WatfordLondon spotted three police cars parked in the area with blue lights on.
One police car on Watford Road next to World of Water.
And the other two in Old Mill Road.
The Watford Observer say Police were called to ” clash at the Grand Union Canal” and that a 57 year old male was arrested on suspicion of having a firearm in his possession.
The firearm turned out to be an air type gun which is being examined as part of the investigation.
The man has been released without bail while enquiries continue.