The too-close-for-comfort relationship was also revealed to authorities through recorded phone calls placed from Bessey to his mother from jail, which are detailed in the report.
In a Dec. 29 call, he asked her why she had not picked up the phone when he called earlier, to which Amy Pearson replied that her phone had been on vibrate, the report said, detailing a sexually charged exchange between mother and son.
"Oh yeah," Pearson said.
"I'm glad I could make you happy," Michael replied.
"Thank you for your assistance," Pearson said with a laugh, ending the exchange detailed in the police report.
On Jan. 3, the day before her arrest, Pearson reassured her son in another jailhouse phone call that she believed everything was going to be okay, according to the police report.
The next day, police informed Pearson she was under arrest and arranged for her surrender.
Pearson's attorney, David Jacks, declined to comment on the case.
Pearson is scheduled to appear in Las Vegas Justice Court on Wednesday.