A phony Facebook account claiming to belong to slain North Texas fitness instructor Missy Bevers sent friend requests to Bevers' family and friends after her death, investigators said.

Bevers, 45, was found dead April 19 inside Creekside Church of Christ in Midlothian, where she had planned to host an exercise camp. Surveillance video captured a person wearing what appeared to be tactical gear inside the church just before the mother of three arrived.

Investigators hoped Bevers' Facebook account would help them identify the person seen on surveillance footage, believed to be between 5-foot-2 and 5-foot-7. Police have not determined whether that person is a man or woman.

After her death, a second account was created using Bevers' name and image, police said. The fake account sent friend requests to people Bevers knew, including students of her Camp Gladiator fitness class and her mother-in-law, police told NBC News.

Police said they have been trying to find the person responsible for the account, which has since been taken down.

"[The] best we can tell so far, the profile is gone, which means a dead end for us," Midlothian Assistant Police Chief Kevin Johnson told NBC News.

Investigators said the account may have been a scam, glitch or even a joke.

Police continue to investigate the incident and ask the public for help. A $10,000 reward has been offered by Oak Dairy Farms for information resulting in an arrest.