India has denied a request by Japan to allow an Air Self-Defense Force plane to collect aid supplies for Ukrainian refugees, a lawmaker said Thursday, derailing Tokyo's plan for the flight later this month.

Under the original schedule, a C-2 transport plane was supposed to pick up relief items such as blankets stockpiled by a U.N. agency in India and the United Arab Emirates, and take them to Poland and Romania, both of which border Ukraine and have welcomed refugees from the war-torn country.

"We had received a request from Japan for permission to land in Mumbai to pick up humanitarian supplies," Arindam Bagchi, a spokesman for India's ministry of external affairs, said at a press conference.