Russian news agencies reported that on Sunday, in the southern province of Dagestan in Russia, a man shot into a crowd of people who are leaving a church, killing five people and injuring at least five others.
The attack happened in the village of Kizlyar in the Muslim-majority republic of Dagestan.
The small republic is located in the Caucasus mountains and borders Chechnya, where Moscow has led two wars against radical religious groups and separatists since the 1991 collapse of the Soviet and which has seen a huge number of people join the Isis.
News agencies in Russia said that the attack happened as churchgoers celebrated a Christian holiday marking the last day before Lent that is called the Maslenitsa according to the Eastern Orthodox calendar.
Quoting the investigative committee, the TASS news agency said that the assailant was identified as a man who is 22 years old. The man is said to be a local from the region.
TASS said that he was then shot and killed by security services who were on duty nearby the area. The news agency added that bullets, a knife, and a hunting rifle were discovered to be in his possession.
Quoting the local branch of the interior ministry, TASS said that some initial reports suggested that all of the five victims were women.
The Interfax news agency said that the injured people include two members of the local security services and two civilians who are also women.