Investigators: Murder, Rape Suspect May Have Bought Chloroform

A new search warrant has revealed possible Amazon purchases for chloroform in the weeks before a 19-year-old man allegedly raped and murdered a Moore High School student.

Chace Cook has been charged with rape and first-degree murder in the death of Madeline Bills, 18.

RELATED: Man Charged In Rape, Death Of Moore Teen

Below is a timeline of events from evidence gathered by investigators:

April 18: Cook Google searches "how long does chloroform take to put someone to sleep."

April 21, 12 a.m.: Cook's car is captured on a Moore traffic camera 30 miles away from his apartment in Oklahoma City, but only two miles from the victims house.

April 21, just after 12 a.m.: Madeline Bills is last seen alive by her parents and two brothers.

April 22, 6:38 a.m.: A neighbor's surveillance camera captures someone climbing over the victim's fence and entering the backyard.

April 22, 7:17 a.m.: The surveillance camera captures the same person climbing back over the fence and leaving.

April 22, 7:21 a.m.: Cook Google searches "how long does a rape victim have to press charges."

April 22, 12:53 p.m.: Cook Google searches "what happens if strangled for a long time."

April 22, 4 p.m.: Madeline Bills is found dead by her family.

Cook is being held on a $5 million bond.