tigators said no dyes were found in the girl's system to indicate she had ingested Sleep Aid capsules despite the high level of diphenhydramine detected in her blood.

Her mother also said she had found inappropriate conversations between her daughter and unknown people on the internet, but police did not find these conversations during their searches.

TEACHER ACCUSED OF SEX WITH STUDENTS WAS ALLEGEDLY BLACKMAILED FOR BETTER GRADES: WARRANTS

Federline told detectives he used applications such as Facebook and Snapchat to speak with his stepdaughter but claimed the conversations were not sexual.

New search warrants show that investigators are probing Federline's online activity for the months leading up to the girl's death.

Federline has pleaded not guilty to the sexual assault and risk of injury to a minor charges. He is due back in court later this month.