MUSKOGEE, Okla. (AP) -- Muskogee County prosecutors have charged a Summit man with first-degree murder in the fatal shootings of his wife and her sister.
Steven Jermaine Harris also will have to undergo a mental competency evaluation, Special District Judge Robin Adair ruled during Harris' arraignment on Monday.
Harris, 21, is accused of shooting his wife, Lillian Harris, five times with a .380-caliber pistol at the family's trailer home in Summit, a small community south of Muskogee, last Thursday. His sister-in-law, Sonya Kay Washington, was shot once with the same gun, according to reports.
The Harrises apparently had been arguing for hours before the shooting, according to reports.
The next court date will be on Nov. 27, prosecutor David Pierce said.
"It's just to make sure he has a lawyer, see where we are as far as the competency issue and then set it for preliminary hearing," Pierce said.
The killings were Muskogee County's third and fourth homicides in an 11-day period. Ten people have been slain in the county -- which has 70,000 residents -- so far this year.