LUHANSK , Ukraine, June 2 (UPI) -- Approximately 500 pro-Russian separatists surrounded and attacked a district border control headquarters in Luhansk, Ukraine, on Monday.
The building was stormed by rebel forces, which had snipers and rocket launchers in nearby apartments. Five rebels were killed and eight were injured, spokesman Oleg Slobodyan of the Ukrainian border service said, adding seven guards were injured.
"We're doing the best we can, but our mission was never intended to be one that repelled large armed attacks," Slobodyan said.
The Russian news agency Itar-Tass reported a Ukrainian fighter plane was sent to protect the building, but Slobodyan said it did not fire into the neighborhood.
The incident highlights the problematic nature of President-elect Petro Poroshenko's promise to crush the rebellion in eastern Ukraine. Luhansk and neighboring Donetsk provinces are, for the most part, under rebel control, and the border between Russia and Luhansk is relatively weakly patrolled.
In a separate incident, armed men entered the offices of two Donetsk newspapers and abducted their editors. It was unclear where they two men, who edited the newspapers Donbas and Vecherny Donetsk, were taken.