Weleekta_State investigators believe two people are responsible for the killing of two girls on a country road, Oklahoma State Bureau of Investigation spokeswoman Jessica Brown said Wednesday.
She said that's because two different caliber weapons were used to kill 13-year-old Taylor Paschal-Placker and 11-year-old Skyla Whitaker.
Brown declined to say what type of weapons were used.
The girls were discovered Sunday afternoon. The state medical examiner's office says each suffered multiple gunshot wounds to the head and chest.
Brown said a reward for information leading to an arrest in the case has been increased to $25,000.
The bodies were found shot along a dirt road that the best friends walked dozens of times for play and to go to sleepovers.
By Tuesday, investigators had no suspects and were unsure of the motive.
Residents remained on edge knowing a murderer could be in this close community of 1,000.
"Believe it or not, I have never pulled any shades in my house and I keep my doors unlocked," said Dena Priddy, a teacher's aide at the school the victims attended. "You just don't expect these things to happen here."
Taylor's grandfather found their bodies after his wife got no answer when she called Taylor's cellular phone. The girls were sleeping over at Taylor's house and had decided to take a walk down the desolate road Sunday afternoon.
Peter Placker sobbed uncontrollably Monday as he tried to remember finding the girls' bodies about a quarter of a mile from his house near Weleetka, about 70 miles south of Tulsa.
"I can't describe coming up on it," he said. "I done it once and I can't do it again."
Kevin Rowland, chief investigator with the state medical examiner's office, said the girls each suffered multiple gunshot wounds to the head and chest.
Full autopsy results were not available yet, but sexual assault appears unlikely, said Special Agent Ben Rosser of the Oklahoma State Bureau of Investigation. He noted the girls were clothed and had only been missing for a half hour.
Authorities were examining evidence, including tire tracks, shell casings, ballistics and shoe prints for any possible leads.
"We will bring all the resources we need to try to help in our investigation," Rosser said in an afternoon news conference.
But as of Tuesday afternoon, authorities had identified no suspects or persons of interest in the crime.
"Nobody we could put a finger on and say this guy's good for it," Rosser said.
Investigators suspect a local person was involved because the killings occurred in such an isolated area, Rosser said. Possibilities include that it was a random shooting, the girls had intended to meet someone or they may have interrupted a crime that was occurring, he said.
Skyla's family said she walked barefoot almost everywhere and rode her bicycle down endless dirt roads. Where she went, her many cats followed, along with her pet goat. Skyla wanted to become a veterinarian, said her grandmother, Claudia Farrow.
Taylor rescued helpless turtles crawling in the middle of the road and wanted to become a forensic scientist like the ones on TV shows, said Placker, who raised the girl.
"She was the best kid I've known," he said.
The murders particularly have shaken a community where some drivers leave their keys in their cars and people who live 10 miles apart call themselves neighbors.
"I can't put it into words," said Jake Fenley, Skyla's basketball coach. "This doesn't happen in rural middle America."
For Priddy, that fear means taking extra precautions: "I got guns loaded," she said defiantly. She also refuses to let her 14-year-old daughter out of the house.
On Tuesday morning, Taylor's uncle, Joe Mosher, drove up to the makeshift memorial at the place the bodies were found. Yellow crime scene tape had been torn away and thick patches of grass were matted down.
A rosary hung from a branch, and stuffed animals and a bouquet of flowers were just beginning to wilt.
"It's the most tragic thing that I've ever seen," said Nell Mosher, Taylor's aunt. "They were just two precious little babies; they were good girls."