Man sexually abused baby and took videos, Colorado officials say. He’s sentenced

A 31-year-old man is going to prison for decades after being accused of sexually abusing children, including a baby, and recording the abuse, Colorado officials said.

In March 2022, Aurora officers received reports that a man, later identified as Aaron Marshall Mocalkins, was using the social media platform Kik to save and send out child sexual abuse material, according to an Oct. 28 news release by the 18th Judicial District Attorney’s Office.

Detectives were able to trace the IP address to an Aurora home, and when driving by, they found a car in the driveway registered to Mocalkins, prosecutors said.

A search warrant was granted , and multiple electronic devices were seized, including a phone, officials said.

Investigators found thousands of sexually explicit material of boys and girls, with one child being less than a year old, prosecutors said.

Further investigation revealed Mocalkins had been talking to minors online and coercing them into sending him sexually explicit videos, officials said.

Officers also found several videos and photos of Mocalkins engaging in sexual acts with kids, including a baby, and a video of him having sex with an animal, officials said.

He pleaded guilty to charges of sexual exploitation of a child, officials said.

Mocalkins was sentenced to 40 years in prison and must pay restitution to all the victims, prosecutors said.

“This case is a powerful reminder that behind every image or video of child exploitation is a real child who has been victimized and continues to be victimized each time the material is viewed or shared,” Chief Deputy District Attorney Jacob Kremin said in the release.

Aurora is about a 10-mile drive east of Denver.

This story was originally published October 29, 2025 at 12:46 PM with the headline "Man sexually abused baby and took videos, Colorado officials say. He’s sentenced."