WUERZBURG, Germany (AP) — The suspect in a knife attack in southern Germany that left three women dead has been ordered kept in custody on suspicion of murder. Authorities puzzled over a possible motive on Saturday, examining his mental health and seeking to determine whether he was radicalized. The attack started late Friday afternoon when the suspect walked into a store in Wuerzburg, went to the household goods department and asked a saleswoman where the knives were. He then grabbed a knife and fatally stabbed three women in the store, before continuing to attack people outside. Six people were seriously injured, one of whom remained in a life-threatening condition on Saturday.