The North Atlantic Treaty Organization (NATO) has no troops inside Ukraine and has no plans to send any into the country, the alliance's Secretary-General, Jens Stoltenberg, told a news conference on Russia's invasion of Ukraine.

"There are no NATO combat troops, no NATO troops at all inside Ukraine. We have made it clear that we don't have any plans and intention of deploying NATO troops to Ukraine," he said.

"What we have made clear is that we have already increased and we are increasing the presence of NATO troops in the eastern part of the alliance on NATO territory."

Ukraine is a partner of the Western defence alliance but not a NATO member.

This is a breaking news story, more details will be added soon. Please keep refreshing this page.