Poland has expelled 15 Ukrainian citizens on national security grounds, according to a statement from the Polish Border Guard.
The agency announced on Saturday that the individuals had repeatedly committed crimes and offences, including drug possession, theft, looting, drunk driving, and organizing illegal border crossings.
The 15 Ukrainians were escorted to the border and handed over to the Ukrainian authorities.
Polish officials have also imposed entry bans on the deported individuals, ranging from five to ten years.
The expulsions come amid wider tensions, after Polish Prime Minister Donald Tusk revealed on 12 August that authorities planned to deport 57 Ukrainians and six Belarusians following riots at a concert in Warsaw on 9 August.