The work necessitated strict security measures, since the authorities had already imprisoned some who had been caught doing it.
كان العمل يتطلب اتخاذ اجراءات احترازية مشددة ،‏ لأنه سبق للسلطات ان سجنت بعض مَن وجدتهم يفعلون ذلك .‏