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

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.
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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.
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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.
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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.
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Shelling between Ukrainian troops and pro-Russian rebels leaves damage in Donetsk, Ukraine, on Monday, June 1.
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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.
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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 prominent separatist commander Alexei Mozgovoi during his funeral in Alchevsk, Ukraine, on Wednesday, May 27.
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An American soldier, right, trains Ukrainian troops on Tuesday, April 21, near Yavoriv, Ukraine. Operation Fearless Guardian, a six-month training exercise, involves about 300 members of the American 173rd Airborne and about 900 Ukrainian National Guard troops.
Photos: Crisis in Ukraine
An American soldier, right, trains Ukrainian troops on Tuesday, April 21, near Yavoriv, Ukraine. Operation Fearless Guardian, a six-month training exercise, involves about 300 members of the American 173rd Airborne and about 900 Ukrainian National Guard troops.
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Residents flee with salvaged belongings during renewed fighting in the Jabunki neighborhood near the airport in Donetsk on Monday, April 13.
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Residents flee with salvaged belongings during renewed fighting in the Jabunki neighborhood near the airport in Donetsk on Monday, April 13.
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A mortar round sticks out of the ground near a destroyed tank at a former Ukrainian army checkpoint outside Chornukhyne, Ukraine, on Monday, March 2. Russian-backed separatists had recently overran the area.
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A mortar round sticks out of the ground near a destroyed tank at a former Ukrainian army checkpoint outside Chornukhyne, Ukraine, on Monday, March 2. Russian-backed separatists had recently overran the area.
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An instructor of the Ukrainian volunteer Azov Battalion conducts training exercises in Kiev, Ukraine, on Sunday, March 1.
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An instructor of the Ukrainian volunteer Azov Battalion conducts training exercises in Kiev, Ukraine, on Sunday, March 1.
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A woman makes her way across a bridge destroyed in heavy fighting in Donetsk, Ukraine, on March 1.
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A woman makes her way across a bridge destroyed in heavy fighting in Donetsk, Ukraine, on March 1.
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A volunteer gives humanitarian aid to residents of Popasna, Ukraine, on Saturday, February 28.
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A volunteer gives humanitarian aid to residents of Popasna, Ukraine, on Saturday, February 28.
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A Ukrainian serviceman climbs out of a tank at a checkpoint near Horlivka, Ukraine, on Monday, February 23.
Photos: Crisis in Ukraine
A Ukrainian serviceman climbs out of a tank at a checkpoint near Horlivka, Ukraine, on Monday, February 23.