Russian police arrests a man during an anti-corruption protest in Moscow, Russia, on March 26, 2017. (Xinhua/Wu Zhuang)

MOSCOW, June 11 (Xinhua) -- Russian police and National Guard have eliminated a gunman that killed four people in a shooting spree on Saturday, said Russian Interior Minister Vladimir Kolokoltsev on Sunday.

The gunman, a resident of the village of Kratovo in Moscow's Ramensky District, opened fire with a hunting rifle from his house on Saturday.

Almost 200 fighters of the Russian National Guard and employees of the Russian Interior Ministry were involved in the special operation to eliminate the shooter.

Four special forces operatives were wounded during the operation, local media reported citing Kolokoltsev.

Investigations would be carried out to determine the motive behind the man's shooting, said Kolokoltsev.