Two senior Ukrainian officials have been arrested during a cabinet meeting as part of an anti-corruption crackdown, hours after a powerful regional governor was sacked.

he head of Ukraine's state emergencies service, Serhiy Bochkovsky, and his deputy Vasyl Stoyetsky were handcuffed by police at the televised meeting.

They are suspected of involvement in high-level corruption.

Earlier Ukraine's president sacked a billionaire governor, Ihor Kolomoisky.

Mr Kolomoisky had been running the key industrial region of Dnipropetrovsk. He had been vying with President Petro Poroshenko for control of the the Ukrnafta energy company.

The two arrests shown on TV on Wednesday were connected to illegal kickbacks involving procurement contracts, Interior Minister Arsen Avakov told the cabinet meeting.