Children as young as 12 have been caught with weapons in schools across the Plymouth area - with lock knives, blades and an air gun among items confiscated.The majority of cases involved children, according to figures released to the Press Association by police forces in England and Wales.At least one in five incidents involved knives, while the data suggests an overall increase in the number of weapons found on school premises.Figures released by police in Devon and Cornwall show that officers...
