A video of a nude man army-crawling through a Moscow metro station has made the rounds on the Russian internet late this week.

The army crawl may have fooled passersby: In videos posted on social media, they can be seen walking past the man as if he hadn’t been noticed.

But the maneuver did not help the man evade the watchful eye of a local policeman.

Moscow police said that the man has been admitted to a psychiatric hospital, Moskva news reported on Wednesday.

According to anonymous sourced cited by Moskva, the incident happened last Sunday at the Krasnogvardeiskaya metro station in southern Moscow.

The Moskovsky Komsomolets tabloid cited doctors as saying that the man had been under the influence of narcotics.