At least one person has been killed and two more wounded in a continuing security operation in Russia's North Caucasus republic of Daghestan.
Interior Ministry officials say the operation was launched on April 11 when security forces in Daghestan's central Untsukul district surrounded a group of suspected militants.
The suspects opened fire at the security forces, sparking a gunfight that left one suspected militant dead and a second injured.
A security officer was wounded in continued fighting on April 12 after a second group of militants attacked the security forces from behind.
In a separate incident, two guards at a former military base in a neighboring district were shot dead by unknown attackers late on April 11.
Daghestan is one of the most volatile republics in the North Caucasus, with violence linked to Islamic extremists and criminal groups.
Based on reporting by RIA Novosti and Interfax