Bogna Janke also said that Duda appealed to Belarusian authorities to accept the aid - two previous consignments having been refused - as well as for common sense and humanitarian treatment of people stuck at the border.
Poland has been experiencing heightened migratory pressure at its border with Belarus in recent months, accusing Belarus's President Alexander Lukashenko regime of engineering the crisis by bringing in Middle Eastern and African migrants with the promise of onward travel to the EU.
Taking part in a briefing at the premises of the Government Strategic Reserves Agency, Janke said that after receiving a report from the government and security services on the situation at the border, Duda had raised the initiative of gathering and transporting humanitarian aid.
"The prime minister took up the initiative and that transport will go today to the border crossing," Janke said.
"President Andrzej Duda appeals to the Belarusian authorities to accept that humanitarian aid for people who are camped in that country, lured by the promise of entering the EU and unfortunately stuck in Belarus," Janke told the briefing. "Due to the cold and the weather, the president appeals to the Belarusian government for common sense and humanitarian behaviour towards those people." (PAP)