A controlled explosion was carried out after a father and son magnet fishing team pulled an unexploded mortar from the River Mole in Surrey. The Police were informed of the suspect discovery and put in place a security cordon, whilst mobilising an Explosive Ordnance Disposal (EOD) team.
The EOD team moved the mortar into an adjacent field where they safely destroyed it.
See: https://metro.co.uk/2020/07/10/boy-6-finds-unexploded-world-war-two-bomb-magnet-fishing-12972444/