Courtesy of ITN reporter James Mates:

View of militia from inside coffee shop where UN envoy Robert Serry is blockaded inside pic.twitter.com/ojbAruMzyW

— James Mates (@jamesmatesitv) March 5, 2014

Robert Serry has now agreed to go straight to the airport and end his mission in #Crimea

— James Mates (@jamesmatesitv) March 5, 2014

Crowd chant Russia Russia as UN envoy leaves coffee shop and scrambles into waiting car#Crimea

— James Mates (@jamesmatesitv) March 5, 2014

Path of envoy's car blocked by protesters chanting Putin Putin. #Crimea

— James Mates (@jamesmatesitv) March 5, 2014

Car moves slowly off to cries of Crimea Russiia #Ukraine

— James Mates (@jamesmatesitv) March 5, 2014

Robert Serry finally on his way to the airport, police having forced a way through an angry crowd. #crimea

— James Mates (@jamesmatesitv) March 5, 2014