Ukraine files treason case against Putin ally

KYIV (Reuters) - Ukraine's State Bureau of Investigation has completed a pre-trial investigation into pro-Russian politician Viktor Medvedchuk, who is accused of treason, and it has filed the case to court, the law enforcement agency said on Thursday.

Medvedchuk, one of President Vladimir Putin's allies in Ukraine, faces up to 15 years in jail if convicted of treason and violating the laws and customs of war, the agency said in a statement on its website.

The investigators' report says Medvedchuk provided the leadership of Russia with assistance in carrying out subversive activities against Ukraine, including by collecting information about the location of military units.

The Ukrainian politician, who heads the Opposition Platform - For Life party, denies wrongdoing. He was detained in April, having escaped house arrest days after Russia invaded Ukraine on Feb. 24.

He had been placed under house arrest on suspicion of treason last year.

(Reporting by Natalia Zinets; writing by Tom Balmforth; Editing by Frank Jack Daniel)