A Manderson man is facing federal manslaughter and firearms charges in connection with a fatal shooting last July.

Justin Looks Twice, 20, pleaded not guilty in U.S. District Court to charges of involuntary manslaughter and use of a firearm during a crime of violence. Federal court documents show he is accused of acting "in a grossly negligent manner" when he accidentally shot and killed Darrell Martinez, 19, of Wounded Knee.

The shooting happened July 10 in Manderson.

If convicted of manslaughter, Looks Twice could face a maximum sentence of eight years in prison and a $250,000 fine. The firearms charge carries a mandatory minimum of 10 years in prison and a maximum of life in prison upon conviction, plus fines.

No trial date was set.

In other federal court news:

• Shaun Chosa, 27, Rosebud, pleaded guilty to a charge of conspiracy to distribute and possess with intent to distribute a controlled substance. According to a news release from the U.S. Attorney's Office, the charge involves a conspiracy to distribute methamphetamine in Rosebud between January 2004 and March 2008. The charge carries a mandatory minimum of five years in prison with a maximum of 40 years and a $2 million fine. Chosa is in custody pending sentencing March 6.
• Shane Cook, 30, Eagle Butte, pleaded guilty to conspiracy to distribute and possess with intent to distribute a controlled substance. According to a news release from the U.S. Attorney's Office, the charge involves a conspiracy to distribute cocaine in Dewey County between October 2005 and August 2007. The maximum penalty is 20 years in prison and a $1 million fine. Cook is in custody pending sentencing March 6.
• Efren Dominguez, also known as Efren Jumping Eagle, 25, Manderson, pleaded guilty to a misdemeanor charge of assault by striking, beating or wounding. According to federal court documents, he admitted stabbing a man in the stomach with a steak knife. The incident happened Jan. 25 in Manderson. Dominguez was originally indicted on two additional felony assault charges. Dominguez is in custody pending sentencing Feb. 13.
• Allexander Klynsma, 19, Rapid City, pleaded not guilty to an indictment charging him with distribution of child pornography. According to federal court documents, he is accused of receiving and distributing child pornography via computer in September in Rapid City. The charge carries a mandatory minimum of five years in prison, with a maximum of 20 years in prison upon conviction, plus a $250,000 fine. No trial date was set.
• Galen Lee "Ace" Loefer, 30, Wanblee, pleaded not guilty to an indictment charging him with assault resulting in serious bodily injury. According to a news release from the U.S. Attorney's Office, he is accused of assaulting and seriously injuring a young child between Nov. 27 and Dec. 7 in Wanblee. The maximum penalty upon conviction is 10 years in prison and a $250,000 fine. No trial date was set.

  Editor's note: The U.S. District Court generally prosecutes felonies committed on reservations, while tribal courts handle misdemeanor crimes. Felonies that happen off the reservation are prosecuted in state/circuit court and are reported separately in the Journal. Some drug and firearms cases are also prosecuted in federal court.