WATCH: St. Lucie County mother accused of killing son told deputies 'he's going to go back to school'

St. Lucie County Sheriff's Office

ST. LUCIE COUNTY, Fla. — WPTV obtained body camera video that showed the moments St. Lucie County deputies first encountered a mother who now faces a second-degree murder charge in the death of her 6-year-old son.

Rhonda Polynice, 41, was arrested Friday and told investigators she was trying to exorcise demons from her son.

WATCH BELOW: Body camera video shows deputies confront mother accused of killing son Mother accused of killing son says 'he's going to go back to school'

In the body camera video, deputies approached Polynice outside her home, telling her they were checking on her child, who had been reported missing from school.

"They haven’t been in school this whole month?" a deputy asked Polynice on the video.

"Oh no no no. It's just that I