By Mick Krever, CNN

Media in Ukraine is “under siege,” a top official from the Organization for Security and Co-operation in Europe told CNN’s Christiane Amanpour on Monday.

“The situation is extremely dangerous,” Dunja Mijatovic, OSCE Representative on Freedom of the Media, said. “I receive reports on intimidation, threats, harassment of journalists on a daily basis. Today, even on the hourly basis.”

Mijatovic is just back from a fact-finding mission to Ukraine.

“Media is used as a tool for manipulation,” she said. “Channels are switched off overnight, like it happened in Crimea, and replaced with channels originating from the Russian federation.”

“So the pattern is known, unfortunately. And it is something that is happening as we speak.”

The state of Ukraine media freedom Click to watch video

Click above to watch Mijatovic’s full interview with Amanpour.