Ukrainian military recruitment officers raided restaurants, bars and a concert hall in Kyiv, checking military registration documents and detaining men who were not in compliance, media and witnesses reported Saturday.

Officers descended on Kyiv’s Palace of Sports venue after a concert Friday night by Ukrainian rock band Okean Elzy. Video footage aired by local media outlets appears to show officers stationed outside the doors of the concert hall intercepting men as they exit. In the footage, officers appear to be forcibly detaining some men.

Checks were also conducted at Goodwine, an upscale shopping center, and Avalon, a popular restaurant.

It is unusual for such raids to take place in the capital, and reflects Ukraine’s dire need for fresh recruits. All Ukrainian men aged 25-60 are eligible for conscription, and men aged 18-60 are not allowed to leave the country.