After 10 days of investigation, there were still no clear suspects or motive revealed for the death of two girls found shot to death on the side of an Okfuskee County road.
Taylor Paschal-Placker 13, and Skyla Whitaker, 11, were shot multiple times in the head and chest on June 8 after they went out for a walk near Taylor's home.
Oklahoma State Bureau of Investigation spokeswoman Jessica Brown said Wednesday that investigators had produced some "promising” leads, but added that they have had promising leads before.
The reward money for information about the gunmen is now more than $30,000, Brown said.
Brown said the agency is not releasing updated reward totals, "in case someone is waiting for a certain dollar amount” before coming forward with information that could prove useful.
Officers are continuing to field phone calls regarding an apparent American Indian man with a long ponytail. Authorities released his sketch Friday and said he was a person of interest.
The girls were shot in the head and chest with two different-caliber weapons, so investigators suspect there were two gunmen.