"This morning up to three hundred civilian protesters have assembled at once in front of our hotel in Donetsk city… In an organized manner orchestrated in front of our hotel the protesters later entered rather aggressively," said Hug, according to Ukraine Today.

Members of the OSCE special monitoring mission were unable to calm the crowd.

"Thirty of these cars were vandalized sprayed upon in the backyard of the hotel. The OSCE special monitoring mission is concerned about this situation and calls upon those in effective control to provide sufficient security for the observers in Donetsk city," said Hug.

See unian.info’s video section for more of the latest news from Ukraine in video from Ukraine Today, Ukraine’s 24-hour English-language news channel.