Daniel Lee, 47, had been scheduled to die by lethal injection on Monday. Lee, of Yukon, Oklahoma, was convicted in Arkansas of the 1996 killings of gun dealer William Mueller, his wife, Nancy, and her 8-year-old daughter, Sarah Powell.
Chevie Kehoe, whom prosecutors described as the ringleader of the killers, recruited Lee in 1995 for his white supremacist organization. Two years later, they were arrested for the killings of the Muellers and young Sarah in Tilly, Arkansas, about 75 miles (120 kilometers) northwest of Little Rock. At their 1999 trial, prosecutors said Kehoe, of Colville, Washington, and Lee stole guns and $50,000 in cash from the Muellers as part of their plan to establish a whites-only nation.
In January 1996, Lee and Chevie Kehoe left the state of Washington and traveled to Arkansas where they dressed in police raid clothing and went to the home of William Mueller, a gun dealer near Tilley who owned a large collection of weapons and ammunition. Kehoe and his father had robbed Mueller in February 1995, and Kehoe planned to find valuable property at his house.
The Muellers were not at home when Lee and Kehoe arrived so they waited. When the Muellers returned, Lee and Kehoe overpowered and incapacitated Mueller and his wife. Then they questioned Nancy Mueller’s eight year old daughter, Sarah Powell, about where they could find cash, guns, and munitions. After finding $50,000 in cash, guns, and ammunition, they shot the three victims with a stun gun, placed plastic bags over their heads, and sealed the bags with duct tape.
They took the victims in Kehoe’s vehicle to the Illinois bayou; there they taped rocks onto them and threw them into the bayou. The bodies were discovered in Lake Darnelle near Russellville, Arkansas in late June 1996.