Police Chief Mark Elbert says it all began around 9:30 Friday morning when police were called to a house to investigate the sexual assault of an eight year old girl.

When officers arrived, Elbert says Diego Campos of West Des Moines had left the house and was armed with a steak knife.  With the help of the Able One Police helicopter and a K-9 unit, Campos was found hiding in a culvert just north of 25th and Highway 370.

Elbert says negotiators were able to talk Campos into surrendering. He says Campos is aquainted with the victim and was in town visiting. The exact relationship is not known.