You may know that 7no. grenades were taken out of the canal using a magnet by a man and two were left on the grass, but the other 5no. have been taken away.
Obviously, these are extremely dangerous and the worry is that if the remaining 5no. have been discarded in a bin or in a field and found by anyone, let alone a child, then the consequences could be fatal. Have you find these grenades or know of their whereabouts please report the matter to the police.