Two Lehighton women are among 11 persons facing prostitution-related charges stemming from an undercover investigation that lasted a year in the Lehigh Valley.

Among those charged are Mariah Lynn Graham, 19, and Tiffany Ann Morresi, 20.Officials said they waived their rights to preliminary hearings and will face prosecution in the Lehigh County Court.Nine other women from the Lehigh Valley and Chester County are named as defendants, four of which were bound over for court action after hotly-contested preliminary hearing held yesterday before Senior District Judge John Dugan.Testimony in those hearings supported the contention of officers of the Bureau of Liquor Control Enforcement that the defendants were part of an ongoing prostitution operation at the Platinum Plus Gentlemen's Club, Airport Road, Allentown, where dancers allegedly offer undercover officers sex in exchange for up to $1,000.