GUILTY AZ - Adriana Sweeney, 13 mos, beaten to death, Kingman, Jan 2011

Colpitts is required to register as a sex offender after being convicted of an unknown offense in Oregon for which he spent several years in juvenile detention. It's not clear when he moved to Kingman or how long he and the baby's 29-year-old mother had been dating.

About a month ago, Colpitts posted a question on the Internet titled, "How do I make my 1-year-old happy?" He said the baby cried while her mother was at work and asked for advice on how to soothe her.

"When she is not sleeping she is crying," he wrote. "How can I help make her more happy? It hurts me to see her like this."

His Facebook page also said the following: "I am 21. I have a girlfriend and she has a daughter. I am not the father. But I sure wish that I will be some day."

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A 19-year prison sentence was imposed Friday for a northwest Arizona resident who critically injured a baby who died at Sunrise Medical Center.

Dustin Colpitts, 22, pleaded guilty to child abuse and manslaughter in the January 2011 death of his former girlfriend's daughter, 13-month-old Adriana Sweeney.

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