The Air Intelligence Unit (AIU) of Ahmedabad Customs intercepted a couple arriving from Bangkok at Sardar Vallabhbhai Patel International Airport (SVPIA) on Sunday and seized 13kg of hydroponic marijuana (ganja) from their baggage. Ahmedabad Customs arrested two passengers from Surat after seizing 13.012 kg of suspected hydroponic marijuana worth around Rs 13 crore at the city's international airport.