Bulgarian Prime Minister Kirill Petkov said that his country would continue to provide humanitarian support to Ukraine, but was not going to send weapons there.

"I must say that at this stage we will not be able to send military aid to Ukraine. It's impossible," the prime minister said, the Associated Press quoted him as saying Saturday.

The agency notes that Sofia had previously agreed to host an additional NATO contingent, in particular, 150 U.S. Marines.