Greek police have a suspect in custody for the murder of a 59-year-old American scientist, according to reports.

Molecular biologist Suzanne Eaton of Oakland, California, went missing on the island of Crete on July 2 while in Greece for a conference. Her body was found on July 8 in an old Nazi bunker built into a cave outside the port city of Chania, though a cause of death wasn’t immediately identified.

Over the weekend, local police brought in 10 possible suspects after collecting DNA that pointed to these individuals, all of whom lived in the area. Investigators then conducted a series of interviews that lasted until Monday.

An unidentified 27-year-old man allegedly confessed to Eaton’s murder after several hours of interrogation.

According to reports, the man is from Kissamos and was traveling through the area when he intentionally hit Eaton with his car. Police also said evidence pointed to a struggle between the two before Eaton was ultimately killed before having her body dumped in the abandoned bunker.

Coroners revealed that Eaton’s death came from a “criminal act” and suffered a slow death.

While her body reportedly contained multiple stab wounds, suffocation was identified ultimately as Eaton’s cause of death.

Eaton’s body is scheduled to be flown to Frankfurt, Germany, in the coming days before arriving back in the U.S. for burial.

A Greek flag flutters in the wind above tourists visiting the archaeological site of the Acropolis hill in Athens, July 26, 2015. Reuters/Ronen Zvulun