Photos: Behind the lines of a separatist camp in eastern Ukraine

Police officers in civilian clothes were allowed to collect their files and documents from the police station that had been overtaken by separatist gunmen in Slovyansk, Ukraine.  (Sergei L. Loiko / Los Angeles Times)

A masked separatist stands in front of the police station in Slovyansk, Ukraine, that was seized by pro-Russia gunmen this month.  (Sergei L. Loiko / Los Angeles Times)

Pro-Russia separatists behind a barricade in Slovyansk, Ukraine.  (Sergei L. Loiko / Los Angeles Times)

A young man reads a government leaflet dropped from a helicopter in Slovyansk, Ukraine.  (Sergei L. Loiko / Los Angeles Times)

A Russian gunman nicknamed Popeye, right, from Crimean self-defense and his fellow soldiers patrol the streets of Slovyansk, Ukraine.  (Sergei L. Loiko / Los Angeles Times)