Donetsk, Ukraine (CNN) -- Long lines of cars jammed the roads leading south out of Donetsk in eastern Ukraine Saturday, as residents attempted to flee the city center after a night of heavy shelling on the city's northern outskirts. Hundreds of vehicles were caught in heavy traffic, and trains are no longer running in and out of the city, which is a stronghold for the pro-Russia rebels. There was heavy shelling and antiaircraft fire on the outskirts of the city to the north throughout the night. There has been sustained fighting in the area for weeks, but it appeared more intense overnight than in recent days.
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Ukrainian army is now entering suburbs of Horlivka, security spokesman says
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Long lines of cars clog the roads heading south out of Donetsk city as conflict looms
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A CNN freelance journalist has been freed by pro-Russian rebels
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Coffins of more plane crash victims arrive in Netherlands
An additional 101,617 @placeholder were reported as internally displaced within Ukraine as of July 22, the UNHCR said.