Ukraine's parliament on Monday approved the partial mobilisation of troops to counter "Russian interference" on its soil, a day after Crimea voted to secede from Kiev and join Russia.

A majority of deputies approved the motion, demanded by interim president Oleksandr Turchynov, citing "the worsening political situation in the country... and Russia's interference in Ukraine's internal affairs."

Parliament also approved an additional 6.9 billion hryvnia (524 million euros, $728 million) for its armed forces.

Crimea's regional assembly chief Volodymyr Konstantynov was quoted in Russian media Monday as saying Ukrainian military units in the peninsula would be "disbanded."

But Ukraine's Defence Minister Igor Tenyukh told a press conference in Kiev Monday that the country's troops would remain in Crimea.

Ahead of Sunday's referendum, Kiev had called last week for the initial mobilisation of reservists and approved the creation of a new National Guard of 60,000 volunteers, as Russian forces encircled Ukrainian military bases in Crimea.