Officials Blame Ukraine Bombs on Terrorists MOSCOW - Several explosions rocked an industrial city in eastern Ukraine on Friday, officials said, injuring at least 25 people in what was described as a coordinated terrorist attack. Yulia V. Yershova, a spokeswoman for the Ministry of Emergency Situations, said the wounded included nine children. Their condition was not known. Though details were murky, investigators said that at least four bombs exploded in just over an hour in the city of Dnepropetrovsk. The first bomb went off at approximately 11:50 a.m. local time close to a tram station, the Interior Ministry said in statement on its Web site. Other bombs went off outside a movie theater and a train station. At least one device was hidden in a garbage can. The first blast appears to have gone off as a tram pulled to a stop to let off passengers. Video and photos from the scene show the tram with its windows blown out and bloodied passengers sprawled on the ground. Yuri V. Boychenko, a spokesman for Ukraine's prosecutor general's office, said by telephone that it was too early to make firm conclusions, but investigators were operating on the assumption that the bombings were the work of terrorists. Unlike in Russia, where Islamist militants have been responsible for waves of violence over the years, such attacks are rare in Ukraine. In January, 2011, two bombs exploded in another eastern Ukrainian town but caused no injuries. At the time, police said they received a message from the suspected bombers, who said they would set off more explosions if they did not receive about $5 million. Police said they refused to deliver the money but it was unclear if any suspects were arrested. And in November 2011, a bomb went off in a garbage can near a tram stop in Dnepropetrovsk, killing a 27-year-old businessman, according to media reports. The bombings Friday come just weeks before Ukraine is to host the 2012 European soccer championships and could raise questions about the country's ability to guarantee security. Several matches are scheduled to be help in the city of Donetsk, a short distance away from Dnepropetrovsk. In an address to the nation, President Viktor F. Yanukovich said top investigative officials were working the case. "We know that there are victims and that this is yet another challenge to us, to the whole country," he said in a statement carried by news services. We will think about how we respond with dignity.