Nine people, including seven law enforcement officers, were killed and another 25 others injured in shootings in southern Russia's Republic of Dagestan on Sunday, RIA Novosti reported, citing the muftiate of the republic, Paralel.Az reports.

The shootings occurred at two orthodox churches, a synagogue and a traffic police post in the coastal city of Derbent and Dagestan's capital city of Makhachkala, according to media reports.

The Russian Investigative Committee has initiated criminal cases under the article related with terrorist attack on the shootings and a counter-terrorist operation regime was introduced in Dagestan, according to the National Anti-Terrorism Committee.

Four of the attackers involved in the shootings have been eliminated and security forces are continuing their efforts, according to TASS, citing the republic's ministry of internal affairs.

Sergei Melikov, head of the Republic of Dagestan, called the attacks in Derbent and Makhachkala attempts to "destabilize the public situation" and urged citizens to remain calm.

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At least six police officers were killed and 12 others injured in shootings by unidentified gunmen on Sunday in southern Russia's Republic of Dagestan, local media reported, citing the local ministry of internal affairs, Paralel.Az reports.

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Unknown gunmen fired automatic weapons at a synagogue and Orthodox church in Dagestan, Russia at 6 PM on Sunday, local time, a Russian Interior Ministry official told TASS, Paralel.Az reports.

Two police officers were reportedly killed in the attack and 6 people were wounded, according to Reuters.

One of the officers was killed at the synagogue, according to RIA, while the other and 6 wounded were shot at a nearby traffic police post. It was also reported that a priest and security guard were victims of the attack, although it is unclear if this means that they were killed or wounded.