Two Yonkers women have been arrested for allegedly offering sex to a man on Craigslist and then robbing him at knifepoint.

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Amber Favereau, 20, and Arielle Pierre, 21, went to a 49-year-old's home in Hartsdale, where he offered $120 in exchange for a sexual act, police said. A neighbor then called police after they saw an argument and one of the women armed with a knife, according to authorities.

Both women face first-degree robbery and criminal possession charges.