CASA GRANDE, Ariz. (AP) -- Arizona police say two women were arrested after about 500,000 fentanyl pills were found in an SUV pulled over for speeding.

A statement from police in the small city of Casa Grande south of Phoenix says that the pills were found Monday concealed in collagen supplement bottles during a search that also turned up a handgun and a large amount of cash. \

Police say 31-year-old Martha Lopez and 30-year-old Tania Luna Solis were arrested on suspicion of crimes including possession of a narcotic drug for sale.

Court records didn't list attorneys who could comment on behalf of the women from Phoenix.