Dhaka, April 25 -- The amount of foreign airlines' revenues stuck in Bangladesh now stands at $323 million, according to the International Air Transport Association (IATA).

The IATA on Wednesday called on Bangladesh to immediately release the revenues that are being held in 'contravention of international agreements'. The association said airlines' revenue worth $399 million is also stuck in Pakistan.

"The situation has become severe with airlines unable to repatriate over $720 million ($399 million in Pakistan and $323 million in Bangladesh) of revenues earned in these markets," the IATA said in a statement posted on its website.

"The timely repatriation of revenues to their home countries is critical for payment of dollar denominated...