In 137 cases of fine, under relevant laws, was imposed on those who attempted unauthorised entry and tried enter station with getting their baggage checked, said the data. Apart from these, the Central Industrial Security Force (CISF) data shows 156 rounds of ammunition and 18 arms were also seized by the force in 37 instances at various metro stations last year, when these banned items found at the baggage scrutiny level or during personal frisking at the entry gates of the stations.