The statement was made by Lukashenko while inspecting military units in Grodno, near the Polish-Belarusian border, on Saturday.
During the visit, Lukashenko urged the Belarusian defence minister to impose "the toughest measures necessary to protect the country’s integrity."
He also accused NATO troops in Poland and Lithuania of "seriously stirring" near the two countries' borders with Belarus.
While inspecting the site in Grodno, Lukashenko, Europe's longest serving leader, made a number of enigmatic remarks, implying that Warsaw and Vilnius have been orchestrating mass protests across Belarus, wich erupted following the August 9 presidential election.
On Saturday, Krzysztof Szczerski, chief of staff to the Polish president, denied the accusations and stressed that "Poland consistently supports the primacy of international law in relations between states."
"The principle of sovereignty and territorial integrity is the foundation of international law," Szczerski told the Polish News Agency PAP.
"We find it upsetting and puzzling that as part of Belarusian propaganda, there are suggestions that Poland would intend to undermine the territorial integrity of this country," the statement by the Polish official reads.