A Sudanese court has sentenced the Slovenian president's envoy to two years in jail for spying and entering the country illegally.
Mr Krizna has been involved in peace talks with Darfur rebels
Tomo Kriznar was involved in the peace process between Sudan's government and rebels in the troubled Darfur region.
He was also jailed for publishing false information, the Sudanese official news agency, Suna, reports.
The envoy is a well known human rights activist in Slovenia and was arrested in July for not having a valid visa.
Not a 'spy'
At an earlier court hearing Mr Kriznar admitted entering Darfur without a Sudanese visa, but denied the spying charges.
According to earlier reports by Suna, Sudanese investigators said Mr Kriznar was taking pictures and shooting video material of villages around Darfur.
The conflict in Darfur, a vast region in western Sudan, started in 2003.
It is estimated that more than 200,000 people have died and more than two million have fled their homes during the conflict.