Officials warned pastors in the small town of Anadarko, Okla., that they should take precautions at their churches after 61-year-old pastor Carol Daniels was brutally murdered in her own church over the weekend.
District Attorney Bret Burns had described the crime scene as "horrific," the worst he has ever seen, and indicated that he would seek the death penalty.
Daniels' body was found behind an altar in the Christ Holy Sanctified Church, located 60 miles southwest of Oklahoma City, a local NBC affiliate reported.
A preliminary autopsy found the cause of death was "multiple sharp force injuries." Authorities currently have no leads or suspects, but are treating the death as a homicide.
Investigators have been quiet about the details of the case, raising the question as to why authorities would choose to meet with pastors only, and not the community at large.
"We talked about security issues within their churches and their congregations," Burns said. "We asked them to remain vigilant and be aware of their surroundings and their church locations."
According to NBC, the doors to the church were locked and there were no signs of forcible entry. Burns did not rule out the possibility that the killer specifically targeted a pastor or a church.
"There are a lot of things we're not prepared to rule out," he said. "I'm concerned about the nature of this crime. I'm concerned about the community."
"The very fact that you have a preacher killed in her church in the middle of the day on a Sunday is alarming," Burns said.
The Oklahoma State Bureau of Investigation is offering up to a $10,000 reward for information leading to the arrest and conviction of the person responsible for Daniels' murder.