On June 26, 1975, Special Agents Jack R. Coler and Ronald A. Williams were killed while attempting to serve arrest warrants for robbery and assault with a dangerous weapon on the Oglala Sioux Indian Reservation in Pine Ridge, South Dakota. The government dismissed its charges against James Theodore Eagle. Robert Eugene Robideau and Darrelle Dean Butler were acquitted by jury on July 16, 1976. Another person indicted for these murders, Leonard Peltier, was convicted and received two consecutive life sentences.