Two gunmen on a motorbike shot dead a Russian military advisor and wounded another in the Yemeni capital on Tuesday, Al Arabiya's correspondent reported.
The gunmen opened fire on the experts, who worked as advisors to the Yemeni army, in southern Sanaa, and then fled, according to Agence France-Presse.
The perpetrators have not yet been identified, Al Arabiya's correspondent added.
The Russians were gunned down as they walked out of a hotel in Baynouna street in southern Sanaa. Security forces immediately cordoned off the scene of the attack.
Many Russian experts are believed to serve as advisors to the Yemeni army, which uses mainly Russian weapons.
Hit-and-run assassinations are frequent in Yemen and are mostly blamed on Al-Qaeda militants, or stem from tribal and political conflicts.
Last week, a Yemeni MP representing the Zaidi Shiite rebels was shot dead in a similar attack.
Abdel Karim Jadban died after two gunmen riding a motorbike shot him as he walked out of a Sanaa mosque.