Livestream video shows tanks and other armored vehicles entering Ukraine through a border crossing with Belarus.
The video was taken at the Senkivka, Urkaine crossing with Veselovka, Belarus, shot around 6:48 a.m. local time.
The US Department of Defense is tracking the reported incursion of troops from Belarus into Ukraine, a US defense official said Thursday.
It was not clear if the troops were only Russian or also Belarusian, the source said.
Watch the video: