Anthony Hardeman is one of three men charged in the shooting death of Demetrius Simpson.

Investigators say Simpson was shot in the 700 block of Marconi in September 2006.

They say Hardeman, his brother and another man got out of their vehicles and started shooting at the 26-year-old.

The Hardemans were arrested by U.S. Marshals after a standoff in which tear gas was fired into a relative's home near Oklahoma City.