Austin Sigg must face trial on 18 of 20 counts relating to the killing of 10-year-old Jessica Ridgeway and an attack on a jogger last year, a spokesman for Colorado’s courts said Friday in a Tweet.

Rob McCallum made the announcement after Sigg appeared before Jefferson County Judge Stephen Munsinger in a preliminary hearing. The arraignment is set for March 12; Sigg remains on no-bond hold.