Ten women were arrested on prostitution charges Friday night in raids on five Bucks County massage parlors. They are the Pine Tree Spa in Nockamixon, The Hilltop Spa and the Wellness Center Spa, both in Springfield Township, the Sun Acupressure Massage Parlor in Doylestown Township and the End Spa in Quakertown. The suspects include five women in their 50’s and 60’s who were the alleged madams. They face felony charges of promoting prostitution. Five other women in their 30’s and 40’s face misdemeanor charges of prostitution. They were arrested as a result of an undercover investigation that started in August. Court documents say all of the women were born in China or Korea, and authorities suspect that some are in the United States illegally.