Kiev has appealed against Libya`s sentence of 19 Ukrainian citizens to stiff prison terms after accusing them of providing military assistance for ousted leader Muammar Qadhafi, the Ukrainian Foreign Ministry said Friday, according to Xinhua.

"The appeal has been filed. But it is still unknown when the court will consider it," the ministry said in a statement.

The 19 Ukrainians were serving their terms in the Felyah prison and repairing military equipment, local newspaper Today quoted Ukrainian human rights activist Stanislav Selivanov as saying.

The 19 Ukrainian citizens along with two Russians and three nationals from Belarus were seized by armed rebels battling the forces of Qadhafi in August 2011.

On June 4, Libya`s military court condemned one of the Russians, judged to have been the coordinator, to life imprisonment and sentenced the others to 10 years` hard labor.

The 24 men have repeatedly denied the charges, insisting they were working in the oil sector in Libya.