The move follows an assessment by the interior ministry that the measure has proved effective in reducing illegal migration.
Poland in June reinstated a no-go zone on a 60-kilometre stretch of the border, after a surge in attempts by migrants to cross illegally and a string of violent incidents, the Reuters news agency reported.
"The zone has yielded tangible, positive results," Interior Minister Tomasz Siemoniak said in a statement on Tuesday.
"It is primarily aimed at people smugglers who pick up individuals to bring them across the border," he added.
In May, a soldier from the 1st Warsaw Armored Brigade was fatally stabbed with a makeshift spear by migrants attempting to breach the border barrier, according to reports at the time.
Migrants also hurled stones and other dangerous objects at Polish law enforcement officers during the attack, according to Poland's Border Guard agency.
Polish officials have accused Belarus of orchestrating the movement of migrants to the shared border as a form of hybrid warfare aimed at destabilising the region.
A spokesman for the Border Guard told reporters in late May that Belarusian forces were assisting people in their illegal border crossings.
"We clearly see that Belarusian forces are helping foreigners during attempts to cross the border, and these migrants are equipped with tools to help them breach the border," the spokesman said.
According to the Border Guard, more than 13,000 people attempted to illegally cross into Poland from Belarus in the first five months of this year.
Since the no-go zone was introduced, the number of attempts to cross the border illegally has fallen by 64 percent, the Polish interior ministry said on Tuesday.
Poland has been facing a migrant crisis on its eastern border with Belarus since 2021.
(gs)
Source: IAR, PAP, Reuters, polskieradio24.pl
