Wichita ? A professor who has studied Rwanda’s 1994 genocide testified two ethnic groups involved in the violence suffered almost equal numbers of deaths.

Loyola professor Brian Endless testified Tuesday in the trial of a Kansas man accused of participating in the genocide.

Eighty-four-year-old Lazare Kobagaya is accused of lying to U.S. immigration authorities about his role in the violence between Tutsis and Hutus. The government contends that Kobagaya, a Hutu, ordered the killings of some Tutsis. Kobagaya denies the accusations.

More than 500,000 people were killed in Rwanda between April and July 1994.

Endless told jurors that almost as many Hutus were killed as Tutsis during the violence. He says about 200,000 Hutus participated in the genocide, while more than one million Hutu refugees fled Rwanda in July 1994.