A 47-year-old suburban Kansas City man has been sentenced to 40 years in federal prison for sexually assaulting a toddler while recording the acts on his cell phone.

U.S. Attorney Tammy Dickinson says Jeffrey Laurence Treta of Blue Springs was sentenced Wednesday in Kansas City after pleading guilty in February to producing child pornography, producing child obscenity, possessing child pornography and obstructing justice.

Prosecutors say Treta was babysitting a 21-month-old girl in January 2013 and didn't know a nanny cam had been installed in the master bedroom of the home where he was watching her. The nanny cam recorded Treta bringing the girl into the bedroom and sexually assaulting her.

Investigators found hundreds of images of child porn that had been downloaded onto his cellphone and laptop computer.

Marina Nezhinkay