PESHAWAR - Law enforcement agencies barred another bullet proof vehicle of the US embassy from entering the provincial metropolis as they did not find the NOC on their passport for Peshawar. Sources said that personnel of the law enforcement agencies flagged down a tinted glass vehicle of the US embassy bearing registration number QM-823 on motorway toll plaza. After checking their document no entry stamp was found on their passport for Peshawar city and the vehicle was sent back to Islamabad after through investigation. On Thursday, two vehicle of US embassy were barred to enter Peshawar and later these were sent back to Islamabad.