KIEV, Ukraine — A series of blasts rocked an eastern Ukrainian city on Friday, injuring 27 people, including 9 teenagers, in what authorities believed was a terrorist attack.
There was no immediate claim of responsibility. But opposition party led by jailed former prime minister Yulia Tymoshenko suggested that President Viktor Yanukovych's government may have organized the blasts in order to deflect the world's attention from Tymoshenko's imprisonment and reported abuse in prison.
The violence also undermines Ukraine's security weeks before it hosts the European football championships in June.
Yanukovych called the explosions "yet another challenge for the whole country," and said Ukraine's best investigators will work on the case, according to the Interfax news agency. His office did not immediately respond to the opposition charges.
Top law enforcement officials rushed to Dnipropetrovsk. Ukraine has not been afflicted with political terrorism but there have been previous explosions connected to criminal extortion.
The first of four explosions Friday in Dnipropetrovsk rocked a tram stop shortly before noon, injuring 13 people, said Emergency Situations Ministry spokeswoman Yulia Yershova. The bomb was planted in a garbage bin.
The second bomb, also planted in a garbage bin, went off about 40 minutes later near a movie theater and a trade school, injuring two adults and nine teenagers. A third blast in the city center wounded three people and a fourth, also in downtown, caused no casualties.
Television footage showed passers-by walking among broken glass trying to help a moaning victim of the tram-stop explosion, while others bandaged a bloodied arm of another victim, a middle-aged man. An elderly woman with blood on her legs lay motionless on the ground and pleaded with someone to call her daughter. Other victims were put on stretchers and transported into ambulance cars.
Deputy parliament speaker Mykola Tomenko, who is member of Tymoshenko's party, suggested the blasts were orchestrated by the government in order to quiet Western criticism of the Tymoshenko case.
"I don't rule out that the authorities and law enforcement bodies may be among the organizers of a scenario, which involves deflecting the attention of the world and Ukraine form Tymoshenko's case on the whole and her beating in particular," Tomenko said in a statement on Tymoshenko's website.
Tymoshenko, 51, the country's top opposition leader, is serving a seven-year prison term on charges of abuse of office in a case harshly criticized by the West as politically motivated, for she and the president are bitter rivals.
She has been on a hunger strike for a week to protest the alleged prison abuse. She claims guards punched her in the stomach and twisted her arms and legs while transporting her to a local hospital against her will to be treated for a spinal condition.
Prison officials deny mistreating Tymoshenko. But photos that Tymoshenko's office says were taken by Ukraine's top human rights official, Nina Karpachova, of Tymoshenko in bed in her jail cell show splotches on her abdomen and lower arm.
Tymoshenko's daughter Eugenia said Friday that Tymoshenko is very weak after refusing food for seven days and fears that she will be force-fed by prison officials.
The European Union has expressed alarm over the investigation and Germany has pressed Ukraine to urgently treat Tymoshenko and investigate the beating allegations.
German President Joachim Gauck on Thursday canceled a visit to Ukraine next month, and calls are growing from opposition lawmakers for EU government officials to boycott the Euro 2012 soccer championship that Ukraine will co-host in June.
In a previous attack in January 2011, two pre-dawn explosions outside an office of a coal mining company and then a shopping center in the Ukrainian city of Makiyivka caused no casualties. Authorities then received letters demanding money in exchange for an end to the blasts. The perpetrators were arrested and sentenced to lengthy prison terms.