DUNCAN, Okla. – A mother and daughter from Oklahoma are accused of having an incestuous marriage.

According to court records Patricia Spann, 43, and Misty Spann, 25, were married in March 2016 in Comanche County.

Police say Patricia is Misty’s biological mother.

Investigators with the Department of Human Services discovered the illegal relationship in August while investigating the children who were inside the Spanns’ home, KFOR reports.

Misty and her two brothers were raised by a grandparent when Patricia lost custody of them, an arrest affidavit reads.

The DHS investigator told authorities that Patricia and Misty reunited two years ago.

Patricia told officials she didn’t think she was breaking any laws by marrying Misty because her name is no longer listed on her daughter’s birth certificate.

A warrant was issued for their arrests on Friday.

Since then, Patricia and Misty have both been arrested and booked into the Stephens County Jail for incest, a detective told KFOR.

Court records show this isn’t the first time Patricia has married one of her own children.

She also married one of her sons in 2008 but court records show that marriage was annulled in March 2010.