(NEW YORK TIMES) MOSCOW – At least 14 people were killed and 28 wounded when an explosion ripped through a trolley bus in the Russian city of Volgograd on Monday, the country’s third deadly attack in four days.

The explosion, which authorities blamed on a suicide bomber, tore out much of the electric bus’ exterior, left mangled bodies on the street and raised fears about more violence in the lead-up to the Sochi Winter Olympics that Russia will host in six weeks.

“For the second day, we are dying – it’s a nightmare,” a woman near the scene told Reuters, her voice trembling. “What are we supposed to do, just walk now?”

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