London, Sept 4 (ANI): Phillip Garrido, the "American Fritzl", who held a girl captive for 18 years and fathered two children with her, may have had other children with Jaycee Lee Dugard - and killed them if they were boys, cops have said.
A senior detective probing her kidnap, rape and imprisonment in California said: "It doesn't make sense that a healthy young girl not on birth control only conceived twice in that time.
"She was raped continually and you would think there would be more babies."
He added: "Garrido is a self-confessed paedophile and experts have told us he would only want daughters with her - and he would see any sons as a potential threat.
"Seeing little girls grow up would give him a continual sexual thrill, but Garrido has never had sexual feelings towards males.
"As they grew up and got stronger, he'd get older and weaker. To Garrido, any boys on the scene may be construed as a future threat.
"It is of course only a line of inquiry but we have to ask Jaycee if she did have any other babies with Garrido and if she did, then what happened to those babies."
The detective added that investigators wanted to find out whether Garrido, 58, sexually assaulted his victim's daughters Starlite, 15, and 11-year-old Angel, reports The Sun.
Garrido and wife Nancy, 55, have been charged with 29 offences, including rape and kidnapping. (ANI)