Mumbai - Customs officials seized 2.5 kilograms of gold from one Pranav Shashikant Chavan at the Mumbai airport on Friday. The gold has been valued at Rs 65.76 lakh. Sources say Chavan had purchased the gold using the now delegitimised Rs 500 and Rs 1000 notes. It is also believed that Chavan had been carrying on a business of exchanging gold for foreign currency.