The disappearance of a Kingman woman has sparked suspicions that she may be the victim of a serial predator.
Mohave County Sheriff's officials say the circumstances surrounding 72-year-old Nancy Rae Hartz's disappearance echo that of two other women who went missing in 2008 and 2011.
Investigators say all three met the same man online, 69-year-old Robert Lawson Carnochan.
He is considered a person of interest in all three cases.
Hartz's daughter reported her missing in July 2015, roughly a month after Hartz left with a man later identified as Carnochan.
Deputies located him in April in Yucca, where he was living with another woman.
A Canadian citizen who has been living in the U.S. illegally, Carnochan is being held on unrelated charges of identity theft, forgery and weapons violations.