A federal jury has convicted a man of involuntary manslaughter in a death that occurred on tribal land near Ponca City. The panel found Gerald Robey Brown guilty Jan. 19 after a four-day trial in Oklahoma City federal court, U.S. Attorney Dan Webber said. Brown, 29 was charged in the September 1997 death of Ronald Lee Buffalohead, which happened near White Eagle. A federal grand jury indicted Brown for voluntary manslaughter, but the jury returned a guilty verdict on the lesser offense, Webber said in a news release. "The prosecution of serious crimes in Indian country is a key responsibility of the federal government and we will vigorously pursue such crimes." Brown faces a maximum potential sentence of six years in prison and a fine of $250,000. He could also receive a term of supervised release after getting out of prison. The FBI and the Ponca Tribal Police Department investigated the crime.