Over 100,000 Ukrainians have entered Poland this week: AFP

Polish Deputy Interior Minister Pawel Svernaker announced Saturday that 100,000 Ukrainians have crossed the Polish border since the start of the Russian offensive on Ukraine.

"Since the start of military operations in Ukraine, 100,000 people have crossed the border from Ukraine into Poland," Svernaker told reporters, who met him in the border village of Medica.

The head of the Polish border guard unit Tomasz Braga added at the same press conference that on Friday alone, nearly 50,000 people crossed from Ukraine to Poland.

Poland, whose territory was already home to 1.5 million Ukrainians before the Russian invasion and which expressed firm support for Ukraine, received the majority of the fleeing Ukrainians.

The United Nations High Commissioner for Refugees wrote in a tweet Saturday that "the latest figures indicate that approximately 116,000 people have fled to neighboring countries since February 24, notably Poland, Hungary, Moldova, Slovakia and Romania."

"The numbers are going up," she added.

Svernaker said that 90 percent of the refugees had physical places to go in Poland, such as the homes of friends or family members, but the rest went to nine reception centers set up along the border.

These centers provide meals, medical care, a place to rest and necessary information.

The refugees, who have nowhere to go, are taken by bus to various shelters that Poland has prepared in advance.

On the other hand, Polish Minister of Infrastructure Andrzej Adamczyk announced on Saturday that "over the next four weeks, Ukrainian citizens will be able to travel on intercity trains operated by Polish Railways free of charge."

Poland, a member of the European Union, with a population of 38 million, has equipped a medical train in the border city of Schmeichel.

Government official Michal Dvorcic said the train would, if necessary, go to the Ukrainian border city of Mostikia to take the wounded to Warsaw hospitals for treatment.

He stressed that Poland is doing everything it can to help its neighbor, which is under attack.

"In the past few days we have seen great solidarity among the Poles," he said, adding, "I have not met anyone who does not want to help."