By Elias Biryabarema KAMPALA (Reuters) -A veteran Ugandan opposition politician was kidnapped during a book launch in Kenya at the weekend, transferred to Uganda and is being held at a military jail in the capital,

A well-known Ugandan opposition figure appeared in a military court Wednesday days after he was reported missing in neighboring Kenya, and denied a charge of seeking military support from abroad to destabilize Uganda’s military forces.

The arrest of a Ugandan opposition figure in Kenya was carried out with Nairobi's knowledge, a Ugandan government spokesperson told AFP Friday.

Kizza Besigye, a former presidential candidate, went missing over the weekend as he visited the Kenyan capital, reappearing days later in military custody back in Uganda.

Kenya's government said it was investigating how a prominent Ugandan opposition leader was spirited out of Nairobi this week, amid growing criticism that it had failed to protect foreign dissidents on its soil.

Kenyan authorities were on Thursday investigating the alleged abduction from Nairobi of the prominent Ugandan opposition politician Kizza Besigye after he appeared at a military court in Kampala.

Amnesty International has condemned the abduction in Kenya of prominent Ugandan opposition politician Kizza Besigye and his subsequent arraignment before a military court in Kampala. The rights group said the action is "part of a growing and worrying trend of transnational repression with governments violating human rights beyond their borders".

Prominent Ugandan opposition figure Kizza Besigye has appeared before a military court in the capital, Kampala, where he has denied charges that include the illegal possession of firearms and negotiating to buy arms abroad.