Customs officials arrested a man along with one kilogramme of gold at Shah Amanat International Airport in Chittagong on Thursday morning.
The detainee Mizanur Rahman, hailing from Lohagara upazila of Chattogram, was a passenger of a flight of Biman Bangladesh Airlines.
"The items were recovered after searching his body and bags" he said.
The estimated price of the gold is Tk1 crore.
"Mizanur is being questioned," the officer added.