The reporter's employer, the All-Russian State Television and Radio Broadcasting Company, known as VGTRK, confirmed that 37-year-old Igor Kornelyuk had died.
The chief doctor of Luhansk District Clinical Hospital, Fedir Solyanyk, said Kornelyuk was rushed to hospital but died on his way to the operating room.
VGTRK said another member of the three-man TV crew, a sound technician, is missing.
The cameraman was reportedly unhurt.
Ukrainian government forces are battling pro-Russian separatists in the Luhansk and neighboring Donetsk regions.
VGTRK said the TV crew was at a separatist-manned checkpoint when it came under mortar fire.
As world wonders how UKR seprtists get tanks, rocket launchers, Pushkov wonders how Kyiv protesters got firecrackers. http://t.co/4UQoIwKgQb
— Robert Coalson (@CoalsonR) June 17, 2014
So it's totally legit now TT @dnrpress: #Luhansk People's Republic recognized by South Ossetia http://t.co/iWM31IOmAY pic.twitter.com/8I9ISFJh9W
— Christopher Miller (@ChristopherJM) June 17, 2014
One Russian journalist was killed, another seriously injured outside Luhansk today: @OTV_Russia http://t.co/YQnJO5n0bM RU
— Nikolaus von Twickel (@niktwick) June 17, 2014
So Borodai is also in Moscow. That means both the Chair and the Prime Minister of the self-declared Donetsk People's Republic are there
— Daniel Sandford (@BBCDanielS) June 17, 2014
more #Ukrainians support joining @NATO.this year 47,3%,last year-35,3%."thanks" to #russia??
— Kateryna_Kruk (@Kateryna_Kruk) June 17, 2014
Correction: Luhansk ppl republic has claimed recognition by South Ossetia. South Ossetia isn't sure it has. http://t.co/0J5dxPSm5P
— Oliver Carroll (@olliecarroll) June 17, 2014
Excellent investigation into #Russia oligarch behind #Ukraine separatists: http://t.co/qoVblQYRr6 via @BloombergNews #Crimea #Donetsk
— Lucian Kim (@Lucian_Kim) June 17, 2014
#Kharkiv in #Ukraine to remove its Lenin statue & change streets named after Soviet leaders. http://t.co/Japt2kKKmP @richgalen
— Jake Jones (@JonesJakeThe) June 15, 2014
Kharkiv mayor @GennadyKernes returns to eastern #Ukraine from Israel today (where he went for treatment after being shot in April).
— Annabelle Chapman (@AB_Chapman) June 17, 2014