An argument during what was supposed to be a happy family dinner outside Moscow turned into a massacre when a man shot and killed nine people, investigators revealed on Sunday.
Survivors told police the suspect had quarreled with others at the dinner in Redkino on Saturday night, left the cottage, returned with a hunting rifle and opened fire.
The suspect has been arrested, according to the Investigative Committee. It did not give his name but stated he was born in 1974 and lived in Moscow, AFP reported.
He had been "drinking spirits," investigators added.
The suspect was detained on suspicion of mass murder after survivors managed to call the police.
Redkino is about 75 miles northwest of Moscow.
The Associated Press contributed to this report.