ST. PETERSBURG, Fla. — St. Petersburg police arrested a man and woman for allegedly murdering a 3-year-old girl and abusing other children, according to numerous affidavits.

The documents state that Monica Williams, 33, and DaQuan Maquel Lindsey, 25, killed the 3-year-old girl by throwing her against the wall, which left her unresponsive.

The girl was said to have bruising on her forehead and left eye, cuts on the face and lip, an occipital fracture, minor burns and marks to her left leg and right hip, and a healing cut to the back of her head and neck. Police said the girl also had hundreds of scars on her body.

The affidavits said that the child was later found to be brain dead from a lack of oxygen.

“It appears Brandy Crews was thrown against a wall,” said St. Petersburg Police Dept. Public Information Officer Yolanda Fernandez. “She had a severe head injury and fractures. She never came to after that. She was essentially brain dead the last couple of days.”

According to police, Williams and Lindsey were caretakers for the child and that Lindsey would discipline the toddler.

A cousin of the victim, Anjaneasa Crews, said Williams is the victim's mother and Lindsay is William's boyfriend. 

“You shouldn’t let anyone put on a hand on somebody else’s child,” Crews said. “I don’t care if it’s not yours, not related. You don’t do that. That’s not right.

The affidavits also mentioned other children, including a 3-year-old boy who was scarred from Lindsey beating him with a belt to “teach him right from wrong.” Williams said she saw beatings injured the child, according to the documents.

Both suspects were booked on charges for first-degree murder in the 3-year-old girl’s death, along with charges for child neglect and abuse.

“For her to let that go on, both of them should get life in prison for that. For my family,” Crews said.