KNOXVILLE (AP) — A Tennessee woman and her boyfriend have been charged with sexually abusing the woman’s young daughters, according to court records.

A tip about the distribution of child pornography led police to the boyfriend, WVLT-TV reported, citing Knox County court records. Officers obtained a warrant and searched the couple’s Knoxville home and three cell phones.

Investigators discovered a video that allegedly shows the boyfriend sexually assaulting the woman’s 4-year-old daughter and an image of the mother sexually touching her infant daughter, records said.

The station did not name either suspect in order to protect the identities of the children.

The couple faces charges that include rape of a child, sexual battery and sexual exploitation of a minor, WVLT reported.