At least 30 killed in shelling in Ukrainian city of Mariupol, officials say

By Laura Smith-Spark and Radina Gigova, CNN

Updated 0306 GMT (1106 HKT) January 25, 2015

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Ukrainian security forces patrol in the village of Bobrovyshche on July 14, 2015. More than 6,400 people have been killed in the conflict in Ukraine since April 2014, the United Nations says.
Photos: Crisis in Ukraine
Ukrainian security forces patrol in the village of Bobrovyshche on July 14, 2015. More than 6,400 people have been killed in the conflict in Ukraine since April 2014, the United Nations says.
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Ukrainian security forces on the lookout in Bobrovyshche on July 14. The country's troops face daily attacks from Russian-backed separatists despite a ceasefire being in place.
Photos: Crisis in Ukraine
Ukrainian security forces on the lookout in Bobrovyshche on July 14. The country's troops face daily attacks from Russian-backed separatists despite a ceasefire being in place.
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A man with a machine gun is among the Ukrainian troops standing guard in Krimskoe town of Luhansk, Ukraine, on June 25.
Photos: Crisis in Ukraine
A man with a machine gun is among the Ukrainian troops standing guard in Krimskoe town of Luhansk, Ukraine, on June 25.
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Shelling between Ukrainian troops and pro-Russian rebels leaves damage in Donetsk, Ukraine, on Monday, June 1.
Photos: Crisis in Ukraine
Shelling between Ukrainian troops and pro-Russian rebels leaves damage in Donetsk, Ukraine, on Monday, June 1.
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A Ukrainian serviceman fires a grenade launcher on the front lines near Donetsk on Saturday, May 30.
Photos: Crisis in Ukraine
A Ukrainian serviceman fires a grenade launcher on the front lines near Donetsk on Saturday, May 30.
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Pro-Russian rebels carry the coffin of <a href="http://www.cnn.com/2015/05/24/europe/ukraine-separatist-commander-killed/index.html">prominent separatist commander Alexei Mozgovoi</a> during his funeral in Alchevsk, Ukraine, on Wednesday, May 27.
Photos: Crisis in Ukraine
Pro-Russian rebels carry the coffin of