A Russian fought with his wife out of jealousy and she left him to live with their elder son. The man, demanding his wife's return, hurled a grenade into his sister-in-law's yard, set fire to his younger son's house, and then committed suicide.
The 61-year-old man lived in Armavir in southwestern region of Krasnodar.
On Thursday, the man, whose name was not released, arrived at his sister-in-law's to demand that his wife return home.
"He demanded that his wife return home to him, threatening violence at the same time. He made a similar demand to his younger son, who lives in the neighbourhood."
"Without waiting for any response, the man detonated a grenade in her yard," according to an investigator's statement.
After detonating the grenade, the man set fire to his son's home, who was away at the time, and then returned to his own home, set fire to it, locked the door from inside, and shot himself.