NAPA, Calif.—Authorities in Northern California say a woman and her boyfriend charged with killing her 3-year-old daughter stored the girl's body in a suitcase and inside a freezer.

Twenty-three-year-old Sara Krueger and her boyfriend, 26-year-old Ryan Scott Warner, were each charged on Tuesday with murder and assault on a child resulting in death. They were scheduled to appear in court in the afternoon.

Napa Police Capt. Jeff Troendly said Krueger and Warner stored the girl's body in a suitcase and then placed the body in a freezer for three days.

Troendly identified the girl as Kayleigh Slusher.

Police found the girl's lifeless body in her bed while conducting a welfare check at Krueger's Napa apartment on Saturday.