SPOKANE, Wash. – Spokane Police Detectives have arrested 13 people in connection to a child sex sting operation.

Nine people are due in court Monday facing charges related to child rape. Four people appeared in court the week before on similar charges.

Court documents said they were arrested as part of a sting called “Operation Net Nanny” that involved several state and federal law enforcement agencies. As part of the operation, an undercover officer posed as a mother offering her three children, ages 6, 11 and 12, to others for sex in a Craigslist ad.

Court records show a married couple were two of the people who responded to the ad. Tim and Sandra McManis were arrested for 1st and 2nd degree Rape of a Child. Court records show Tim responded to the ad saying he and his wife have fantasied about having sex with younger people but had never had the opportunity. Documents state that Tim was told the ages of the children and still agreed to meet up with the mother and her children. The couple was arrested on July 7 at a meet up location.

Officials also arrested Jason Lee Borseth on charges of Rape of a Child, Commercial Sexual Abuse of a Minor and Violation of the Uniform Controlled Substance Act. Court documents state Borseth had offered the mother drugs in exchange for sex with one of her children. He was arrested on July 7 at the 7-Eleven off of Argonne and Bridgeport in Spokane.

Detectives also arrested Robert Dahms on July 7 at the 7-Eleven at Argonne and Liberty. Court documents said he agreed to meet up with the mom to have sex with the 11-year-old daughter. Officials said Dahms is a convicted felon in Idaho for having sex with a minor under the age of 16 and has a history of drug abuse.

Thomas Bramblee, Mechel Frederick, Glenn Hampton, Steven Hunt, Christopher Luman, Reggie Oliver, Eduardo Populus, Joseph Siria, and Sean Stevenson were also arrested in the sting. They were all scheduled to make court appearances on Monday.