MOSCOW (AP) — A former Russian prison service official shot himself dead in a courtroom Wednesday after being handed a three-year sentence on corruption charges.

Local court and investigative officials said Viktor Sviridov, who had served as chief of department in the federal prison service, took out his pistol and shot himself dead in the courtroom after hearing the verdict.

Officials are now looking how Sviridov was able to bring the gun into the court building.

Sviridov was convicted of extorting a 10-million ruble (over $158,000) bribe. Sviridov pleaded guilty to the charges and his lawyers asked the judge not to send him to prison.

He had been requested not to leave Moscow and came to attend the sentencing from home.