Updated

A 15-year-old boy in the Denver area has been charged with killing a 10-year-old girl and could be tried as an adult.

Adams County District Attorney Dave Young said Wednesday after a closed hearing that the boy was charged with first-degree murder with intent to kill after deliberation, and first-degree murder of a child under 12 by someone in a position of trust.

Young said he intends to prosecute the boy as an adult. Authorities have not released the boy's name.

Kiaya Campbell of Thornton was found dead June 8 after her family reported her missing the previous night.