COLORADO SPRINGS -

The teenager charged in the death of a Fort Carson soldier and his pregnant wife says he's not guilty.

Macyo January pleaded not guilty to double homicide and burglary charges in court Thursday morning.

He's being tried as an adult in the deaths of SSgt. David Dunlap and his pregnant wife, Whitney.

He was 17 at the time of their deaths on January 14, 2013.

Prosecutors say January shot and killed the Dunlaps when they walked in on him while he was burglarizing their house on Bassett Drive.

If convicted, January faces up to 40 years in prison.