MOSCOW, December 21 - RAPSI. The court has upheld on Wednesday the denial of an arrest warrant for U.S. citizens Michael and Nanette Craver on charges of murdering their adopted Russian son, the Russian Legal Information Agency (RAPSI/ reports from the courtroom.

The Moscow City Court has also dismissed the appeal filed by Vanya Skorobogatov's aunt and the denial has entered into force.

Nathaniel Craver (Vanya Skorobogatov) from the Chelyabinsk Region died on August 24, 2009 in a U.S. hospital from a head injury. The numerous other injuries on his body should be seen as torture, the prosecution said during the trial. Doctors found over 80 injuries on the boy's body.

The Court of York County, Pennsylvania, sentenced the Cravers on November 18 to 16 months in prison and five years on parole for involuntary manslaughter. However, they were released immediately after the trial as they had spent over 1.5 years in a pretrial detention center.

The seven-year-old boy's death sparked public outrage in Russia and the United States.

The Foreign Ministry expressed outrage over the sentence and called it inadequate.

Investigative Committee head Alexander Bastrykin issued instructions to accelerate the investigation of the Cravers, seeking to place them on the international wanted list.