India has not stated any official reason for the denial of permission to this particular vessel, but the decision came just after David Lu's visit to India.
The consignment meant for the Rooppur Nuclear Power Plant (NPP) that had to be turned away from Bangladesh shores due to being carried by a US-sanctioned vessel, may ultimately be sent to their destination by road. This is based on indications that the Russian ship, instead of going all the way back with the vital equipment it was carrying, has hovered in the Bay of Bengal