MOSCOW, October 13 (RAPSI) - Russian opposition activist Sergey Udaltsov, who was sentenced to four and a half years in jail for organizing the 2012 riots in central Moscow, stopped hunger strike launched in protest of his solitary confinement, RIA Novosti reported on Tuesday.

Udaltsov, currently located in a penal colony in the Tambov region, was put in solitary confinement for unnamed violations of prison regulations. Opposition activist launched a hunger strike in protest of this punishment he considered to be too severe.

Over 400 people were arrested and scores were injured in the authorized Bolotnaya Square protest that turned violent in May 2012. Dozens were later charged with inciting mass riots and battery against law enforcement officers.

Leonid Razvozzhayev and Sergei Udaltsov were sentenced to 4.5 years in prison each on charges of organizing mass protests.

Other defendants in the case received prison terms ranging from suspended sentences to four years. Several defendants were pardoned; one is undergoing compulsory mental treatment.

Udaltsov’s lawyers are objecting to the inhuman treatment of their client in court and during his transfer and transportation, an unfair trial, and infringements on his rights to defense and the freedom of expression and assembly.