An Iowa City woman was arrested after allegedly selling crack cocaine to a person working with police during a narcotics investigation Monday, according to Iowa City police.

Patricia Silvia, 48, faces charges for a controlled-substance violation, a Class B felony, gathering for use of drugs, a Class D felony, and possession of a controlled substance in a structure or vehicle, an aggravated misdemeanor.

Police allege Silvia tried to sell crack cocaine in exchange for $200.

Three other people were also using drugs at the residence, police said.

A Class B felony is generally punishable by up to 25 years in jail.

Courtney Johnson, 26, also of North Liberty, was charged Monday with possession of crack cocaine with intent to deliver at the same residence.

— by Danny Valentine