New Delhi: An Afghan national has been arrested at the Delhi airport for allegedly carrying smuggled gold worth more than Rs. 72 lakh concealed in his shoes, the Customs officials said on Thursday.The Afghan passenger, who arrived at the Terminal-3 of IGI Airport from Kabul on Tuesday, was arrested by the Customs officials. Two gold bars were concealed inside the man’s shoes, worth Rs. 72.90 lakh, officials said. Custom officials seized the gold and arrested the man. The offices suspected the man and based on intelligence inputs the man was taken for frisking and when he was asked to take out his shoes, the gold bars were seen hidden in the shoes. Police are now invetigating if he had smuggled gold with the same modus operandi earlier too.