Russian prosecutors said Monday they had canceled an arrest warrant for former Ukrainian Prime Minister Yulia Tymoshenko after she appeared in Moscow over the weekend and was questioned. Tymoshenko had been accused of bribing Russian defense officials while she headed Ukraine's main gas distributor, the now-defunct United Energy Systems. Tymoshenko has denied the Russian charges, saying they were politically motivated. Russia's main military prosecutor's office canceled the international arrest warrant it had issued a year ago because Tymoshenko had provided investigators with necessary "explanations" over the weekend and agreed to show up for questioning in the future, the prosecutor-general's press service said in a brief statement.