The U.S. Supreme Court won’t hear convicted murderer Regina Garrett’s request for a new trial in the 2002 shooting death of her husband.

The Supreme Court decision this past week upheld a Mississippi Supreme Court order in February denying Garrett’s request to file a post-conviction petition.

That’s argument that an inmate has found new evidence — or a possible constitutional issue — that could persuade a court to order a new trial.

Prosecutors say Charles Garrett died in 2002 from a shotgun wound to the face. His body was found by a Perry County deputy. Regina Garrett claimed the shooting was an accident.

Garrett was convicted of murder in 2004 in Perry County and sentenced to life in prison. The state court upheld her conviction in 2006.