Todd Kohlhepp's mother says he told her there are no more bodies buried on his property and that she expects him to plead guilty to the deaths of the seven whose remains were unearthed there, CBS News reported.

Regina Tague, a Moore resident, described her son’s apparent motives – as she says he relayed to her after his arrest last week – during an interview to be broadcast in part during “48 Hours” on Saturday night.

Saying her son is “not a monster,” Tague said Kohlhepp says he killed four people at Superbike Motorsports in 2003 because they had embarrassed him about not knowing how to ride a motorcycle when he was previously shopping at the store.

She said Kohlhepp says he killed Charles Carver because he was a smart-aleck, and that her son told her he chained Kala Brown and held her captive inside a metal container on a large rural property near Woodruff for two months so she wouldn’t report the crime to police.

It was the discovery of Brown on that property – spurred by a joint missing-persons investigation by police in Anderson and Spartanburg County – that led to the revelations that have emerged in the past week.

Kohlhepp is also accused of killing Meagan Leigh McCraw Coxie and her husband, Johnny Coxie. Kohlhepp pointed out locations where he buried their remains, as well as Carver’s, after securing three things from the Spartanburg County Sheriff’s Office, investigators have said.

Those three things were to speak with his mother, to deliver a photograph to his mother and to transfer some money to a friend’s child’s college fund.

“Todd is not a monster,” Tague, told CBS “48 Hours” correspondent David Begnaud. “He’s not even close to it. He wasn’t doing it for enjoyment. He was doing it because he was mad and he was hurt.”