A 46-year-old mother in Polk County, Florida, United States, Christina Clemens, allegedly admitted to having sex with her 22-year-old son, Shane Clemens, “only about 100 times” after a domestic dispute between the pair led to a police investigation.

According to Polk County Sheriff Grady Judd, the alleged incest was uncovered after deputies were called to the family’s residence over a domestic violence incident involving Christina and Shane.

Judd said Christina accused her son of battering her during the dispute, but Shane subsequently told officers that he had been having sex with his mother since he was 18.

Investigators then asked Christina about her son’s allegation, and Judd said she acknowledged that the sexual relationship had occurred.

According to Judd, Christina told officers that they had sex “only about 100 times.”

The investigation also involved Christina’s husband, who Judd said was unaware of the alleged sexual relationship between his wife and son.

However, Judd said the husband told investigators that he had found it suspicious that Christina and Shane would go into the master bedroom and lock the door.

“What else can you say? That’s nasty,” Judd said. “And it’s illegal.”

Both Christina and Shane were charged with incest, while Christina was also charged with adultery, according to Judd. (CBS 12, excluding headline)