On 2 November 2009, Ueta, a snack hostess, was arrested for defrauding a woman of 1.26 million
yen. After some further investigations, authorities noticed that all of the men she dated died under suspicious circumstances. Soon after, the deaths were carefully examined. In January 2010, Ueta was arrested for robbery and murder of two of her dates.
Suspicious deaths ; Akira Seo (42) : On 13 May 2004, Seo, a journalist and Ueta's boyfriend at the time, was run over by a train at the
Inbi Line in Tottori. : Things like "I was happy to meet you" were written on a supposed suicide note, and the Tottori
Prefectural Police treated the death as a suicide because of it. No autopsy was made on the body. Akira had had money trouble with Ueta, and was frequently indebted with co-workers. ; Houitsu Sakai : In February 2008, the body of police officer Sakai was found hanged in the mountains on the outskirts of Tottori. : Sakai was a regular patron of the snack bar, and it was said that there was financial trouble between him and Ueta. ; Kazumi Yabe (47) [conviction] : In the early morning of 11 April 2009, Yabe, a truck driver, was found floating in the sea off
Hokuei. : In addition to finding sleeping agents in his body, authorities also detected sand in Yabe's lungs (in the case of drowning, it could not be possible for it to enter naturally). There were too many unnatural elements surrounding the death, and it was concluded that the possibility of murder was very high. ; Hideki Maruyama (57) [conviction] : On 7 October, Maruyama, an electronics store owner, was found 4 kilometers away from his Maamakawa home in Tottori, beaten and left to die in a river. : The day before, Hideki had decided to "go collect his family" from Inokoshi, and later go somewhere with the car. As a result of the investigations, Maruyama's car was found about 10 meters away from the crime scene, and with a background check of the car navigation systems, it was found that he had visited Ueta's house numerous times. : Ueta was his housemate, and owed about 1.4 million yen to Maruyama, a likely reason for his murder. In addition, the murder scene indicated that Hideki had been pressed into the shallow river with a depth of 20 cm. by a third party. Like with Yabe, sleeping agents were located in his body. ; Kazumi Taguchi (58) : On 27 October, the unemployed Taguchi, who lived in the same apartment with Ueta, died suddenly from a supposed illness. : In September, Taguchi rented a car from Ueta and crashed in front of
Tottori Station while driving. At that time, Ueta had received 80,000 yen from Kazumi, whom allegedly wanted to talk about "the other party", but that discussion never occurred. : A month later, Taguchi fell into a coma and died. He was a regular patron of Ueta's snack bar, and even had a key to her home. == Arrest ==