Photo: Courtesy

Missing US Citizen Suzanne Eaton

American scientist Suzanne Eatonwas sexually assaulted before she was killed on the Greek island of Crete, authorities confirmed Tuesday.

Speaking at a press conference in Chania, police spokesperson Eleni Papathanassiou, told reporters that the 27-year-old manarrested for murder Mondayallegedly killed the molecular biologist “with the motive of her sexual abuse.”

A second spokesperson confirmed to PEOPLE the man allegedly admitted to raping Eaton.

The suspect allegedly rammed her twice with a car “to immobilize her,” then “placed her in the trunk and carried her to the well of the war shelter,” Papathanassiou added.

The suspect then allegedly sexually assaulted and suffocated her. An autopsy listed the official cause of death as “suffocation”, Papathanassiou told reporters.

Suzanne Eaton.Courtesy

Missing US Citizen Suzanne Eaton

“He then repositioned a pre-existing pallet in her mouth and headed to an adjacent cemetery where he thoroughly cleaned the car’s trunk to eliminate any traces and evidence,” she added.

Despite this, Greek police were able to obtain blood samples and other evidence from the area and seized the car and clothing of the suspect for laboratory analysis.

“A particularly important element that guided our research was the discovery of recent traces of vehicle wheels on a parcel that leads to the well of the shelter,” Major General Constantine Lagoudakis, the police director of Crete, told reporters.

Scientist Was Killed on ‘Her Usual Run’: Police

Greek police provided further details of the last moments of Eaton, who had arrived in Chania on June 30 to participate in a conference at the Orthodox Academy of Crete.

“At noon on the 2nd of July, immediately after lunch, she went to her room, changed into sports clothes and went out for her usual run, leaving her cell phone and other personal belongings in her room,” Papathanassiou said.

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Missing US Citizen Suzanne Eaton

Extensive searcheswere then carried out across the surrounding area involving the police, Air Force, Fire Department, Coast Guard, and a small army of local volunteers — a group of whom reported the discovery of a woman’s body on July 8.

The suspect was brought in for questioning on July 15. “Under the weight of the data we had collected [he] admitted his act,” said Lagoudakis.

He allegedly also told police that he acted on impulse after spotting Eaton running.

source: people.com