A lawyer for imprisoned Russian oil magnate Mikhail Khodorkovsky says his client has ended a nearly week-long hunger strike.

Attorney Anton Drel says oil magnate ended his fast after authorities transferred his business partner Platon Lebedev from solitary confinement to a regular cell. Authorities put Lebedev in isolation after accusing him of insulting prison guards.

In May, authorities sentenced the two former owners of the Yukos oil company to nine years in prison for tax evasion and fraud. Opposition supporters call their trial politically motivated because of Khodorkovsky's backing of opposition politicians - charges Kremlin authorities deny.