The incident took place near Grève d’Azette and the Island’s dedicated bomb disposal officer was called out to deal with the live munition.
Later, in a Facebook post, the States police urged Islanders never to touch any suspicious items which they found on the beach and to call them immediately.
‘This live grenade had been picked up by someone and placed on a wall in St Clement –anything could have happened. The Bomb Disposal Officer has taken this one away,’ the post said.
‘If you do find anything like this then please get in touch with us immediately.’
It followed a similar incident which took place last Friday [10 April], when a Second World War S-Mine – also known as a ‘Bouncing Betty’ – was picked up off the beach and taken home. It was also eventually dealt with by the Bomb Disposal Officer.