Answer by taking a quote from the following article:

Means was born in Porcupine, South Dakota, on the Pine Ridge Indian Reservation, to Theodora Louise Feather and Walter "Hank" Means. His mother was a Yankton Dakota from Greenwood, South Dakota, and his father, an Oglala Lakota. As well as Russell, the family had two other boys (William "Bill" and Warren ) and three girls (Madonna, Mabel Ann and Phyllis). He was given the name Wanbli Ohitika by his mother, which means "Brave Eagle" in the Lakota language.

On November 3, 1999, Means and Robert Pictou-Branscombe, a maternal cousin of Aquash from Canada, held a press conference in Denver at the Federal Building to discuss the slow progress of the government's investigation into Aquash's murder. It had been under investigation both by the Denver police, as Aquash had been kidnapped from there, and by the FBI, as she had been taken across state lines and killed on the Pine Ridge Reservation. Both Branscombe and Means accused Vernon Bellecourt, a high-ranking leader of AIM, of having ordered her execution. Means said that Clyde Bellecourt, a founder of AIM, had ensured that it was carried out at the Pine Ridge Reservation. Means said that an AIM tribunal had banned the Bellecourt brothers but tried to keep the reason for the dissension internal to protect AIM.  The Associated Press (AP) reporter Robert Weller noted that this was the first time that an AIM leader active at the time of Aquash's death had publicly implicated AIM in her murder. There had long been rumors. Means and Branscombe accused three indigenous people: Arlo Looking Cloud, Theda Nelson Clarke and John Graham, of having been directly involved in the kidnapping and murder of Aquash. The two men were indicted in 2003 and convicted in separate trials in 2004 and 2010, respectively. By then in a nursing home, Clark was not indicted.  As of 2004, Means' website stated that he was a board member of the Colorado AIM chapter, which is affiliated with AIM-Autonomous Chapters.

What were the findings of the accusations?
The two men were indicted in 2003 and convicted in separate trials in 2004 and 2010, respectively. By then in a nursing home, Clark was not indicted.