Illinois Murder Suspect Googled ‘which knife is best to cut through a human arm’

Not the brightest crayon in the box.

If you've watched any true crime documentary/TV show ever, you know that one of the first things investigators will look at is someone's internet search history.

After a March murder in Chicago (the 2300-block of South Kirkland Avenue), the search history of 32-year-old Deparris Slaughter became a major factor in the investigation. Slaughter was the caregiver of the 68-year-old victim, Michael Lipford.

Slaughter is accused of shooting and dismembering Lipford and prosecutors have charged him with first-degree murder, dismembering a human body, concealing a homicide, and residential arson.

There are more grizzly details in the case and, according to NBC Chicago, Slaughter's search history didn't help his case.

Just days before the attack, investigators found Slaughter had looked up the phrases: 'what happens if you kill someone', 'which knife is best to cut through a human arm', 'what caliber of bullet causes more damage', and 'how to remove changing fingerprints with superglue or sandpaper'.

Prosecutors didn't offer a motive for the attack.

He was initially detained soon after the attack, in a traffic stop on March 9th. A bullet in his car matched the ballistics of the one found on Lipford and a red gas can in his car tested positive for gasoline.

Slaughter, who is from Munster, Indiana, was arrested Saturday in Chicago and is being detained while his case proceeds. His next court appearance is set for December 24th.

And no, clearing your search history doesn't actually permanently delete it.