Russian police say they are questioning two suspects in connection with Sunday’s stabbing of a South Korean student in Moscow.

Russian police said Tuesday that if charges against the suspects are confirmed, stern punishments will follow.

They also said that the attack does not appear to have been aimed South Koreans in particular.

Investigators are focusing their probe on whether Sunday’s stabbing was organized by a new ultrarightist organization that has been involved in violent crimes in regions near Moscow.

Meanwhile, the Korean who was stabbed, identified by his surname Shim, is recovering in intensive care after undergoing surgery at a municipal Moscow hospital.

The South Korean Embassy in Moscow has urged Korean residents to refrain from going out during the evening and to avoid going to remote areas even during the daytime.