Police in Arizona say the man responsible for four homicides over three days last week killed himself on Monday morning inside a hotel in Scottsdale, as officers were in pursuit.

The four victims include 59-year-old Dr. Steven Pitt, a forensic psychiatrist known for his work on theJonBenét Ramsey murder investigationand theJodi Arias trial.

PEOPLE confirms the suspect wanted for killing Pitt on Thursday is believed to have also fatally shot paralegals Veleria Sharp, 48, and 49-year-old Laura Anderson on Friday.

The Saturday shooting killed 72-year-old counselor and life coach Marshall Levine.

Speaking to reporters later Monday, Phoenix police Sgt. Vince Lewis said the investigation was “ongoing.”

“We have a deceased suspect at this point, the primary person we were looking for,” he said.

Information about a possible motive has not been released.

Julio Jimenez/East Valley Tribune/AP

Forensic Psychiatrist-Shooting Deaths

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How the Victims Were Found

Police were called to Pitt’s office last week after several people reported hearing an intense argument end with gunshots, PEOPLE learns.

Then on Friday, both Sharp and Anderson were shot about the same time outside an office complex.

Levine was discovered dead from a gunshot wound inside an office building shortly after midnight on Saturday, according to detectives.

AP/REX/Shutterstock

Forensic Psychiatrist Shooting Deaths, Phoenix, USA - 02 Jun 2018

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Witnesses described Pitt’s assailant as a bald man in a dark-colored hat with a short brim. Police released a composite sketch of the suspected killer over the weekend.

Pitt previously assisted the police who investigated the still-unsolved killing of 6-year-old pageant queenJonBenét Ramsey, who wasfound dead at her homein Boulder, Colorado, in 1996.

Pitt was also an adviser to the Jefferson County District Attorney’s Office following the Columbine High School massacre and was part of the police task force that captured Arizona serial murderer Mark Goudeau, who police dubbed “the Baseline Killer.”

He also served as a witness during the prosecution of Jodi Arias for killing her ex-boyfriend Travis Alexander.

source: people.com