Below is a summary of the main security-related events in the North Caucasus on December 22, 2005
* The number of people who have fallen ill due to an unknown substance in the Russian republic of Chechnya has reached 75, local officials said
* Nikolai Rogozhkin, the commander of the Interior Troops, said the overall Interior Troops contingent in Chechnya could be reduced in 2006
* The Russian Interior Ministry is planning to form two special battalions of anti-terrorism experts in Chechnya, said Nikolai Rogozhkin, the commander of the Interior Troops
* Law enforcement bodies discovered an arms cache containing weapons and explosives in a forest near the village of Dzhangya in Daghestan
* Law enforcement bodies in Daghestan detained a Chechen-born participant of an illegal armed formation suspected of crimes against federal forces on the territory of Itumkalinsk district in Chechnya
