(Twitter/@KetyDC)

READ MORE: Ukraine Crisis Timeline: How It Unfolded

This forced the Ukrainian officers to lock themselves in a control room, until the country negotiates with the Russians. 

Authorities also saw a Russian naval ship docked near Lake Donuzlav, the site of the Ukrainian naval base. In an interview with CNN, Viktor Shmihanovsky, the Vice Commnder of the base, said that Ukrainain ships are now trapped at the lake because of the invasion.

Check back with Neon Tommy for more updates as the situation progresses.

For more on Neon Tommy's coverage of the Ukraine Crisis, read more here. 

Read more on this story on CNN.

Reach Executive Producer Shilpa Nagesh here or follow her on Twitter.