This was reported by Polish Defense Minister Mariusz Błaszczak, as quoted by Defence24.pl journalist Jakub Palowski.
“Poland provided Ukraine with 10 MiG-29 fighter jets,” the message says.
On April 15, Polish President Andrzej Duda said that Poland would transfer MiG-29s to Ukraine gradually, as it replenishes its fleet with FA-50 and later F-35 fighters.