India, Feb. 10 -- The Nancy Guthrie missing case has turned into one of the most high-profile crime stories the US has seen in recent times. More than two weeks have passed since she was last seen on January 31. So far, authorities have not been able to make any headway with no suspect or person of interest identified.

But the investigation continues, and the residences of Nancy Guthrie's older daughter, Annie and her husband saw police searches on Saturday and Sunday. When the Pima County Sheriff was asked on Monday if Tommaso Cioni is a suspect, he said that no one has been ruled out yet.

Of the three siblings - Annie, Savannah and brother Camron - Annie and her husband have received the most attention in the probe. Before searches we...