Shortly afterwards he invited the woman to his home in the city of Zama and killed her, it is claimed.
According to news reports, the police discovered body parts from eight women and one man in Shiraishi's apartment, along with a saw, ropes and an awl, apparently used to restrain and cut the bodies. Media reports said he used similar tactics to kill seven other women, four of them teenagers. Two severed heads were stored in picnic coolers and had been covered with cat litter.
Police conducted the search after security camera footage showed Shiraishi walking with the woman, who has been missing from her Hachioji home since earlier this month, near JR Hachioji Station and near the Odakyu Line's Sobudaimae Station near his home on October 23.
He also admitted to murdering the 23-year-old missing woman from Hachiōji, Tokyo, the sources said.
This woman had earlier tweeted "I'm looking for someone to die with me", according to the Sankei Shimbun daily. Detectives are working to identify the victims amid fears she may be one of them.
The gruesome case captured widespread attention in a country known for public safety, topping news with reports that showed the building where the suspect lived in a small studio apartment.
Neighbours told officers that they had noticed a sewage-like smell for at least two months, but that they had not reported it. "It was something I never smelled before".
The woman is believed to have met the man after writing on a suicide website that she wanted to kill herself.
After his arrest, Shiraishi is said to have admitted dismembering the victims in his bathroom, and putting some of the body parts in rubbish bins.
Fundamentally, giving candy to a kid who, for whatever reason, had to miss out on Halloween is a kind thing to do. The tweet was immediately met with backlash, with many social media users taking issue with Trump Jr.'s analogy.
However, that service isn't set to launch until 2019, and Marvel is eager to get New Warriors to air sooner rather than later. Apparently the pilot for the series has "tested through the roof", even catching the eyes of high-level Disney execs.
Mario has been Nintendo's most important character for 32 years - and his popularity is showing no signs of slowing down. Nintendo also bumped up its revenue forecast from 750 billion yen (~$6.6 billion) to 960 billion yen (~$8.5 billion).
Burnley defender Stephen Ward has praised Dyche for his work at the club, and admitted that it would be unfortunate to lose him. It has also been claimed that the latest talk of Everton making an imminent move for Dyche has not emanated from Merseyside.
While the beta will likely be limited, we don't expect Samsung's official Android Oreo release to be limited in scope. Additionally, the enterprise version of the Note8 will receive more regular security updates for up to three years.
Weinstein is now said to be in rehab and his spokeswoman says he 'unequivocally denies any allegations of non-consensual sex'. She has claimed that Weinstein raped her almost 20 years ago. "I have been silenced for 20 years", McGowan said.
Within two days of the referendum Iraqi forces took over territory that had been held by the Kurds, including Kirkuk. The city was retaken by Iraqi forces earlier this month. "Otherwise they carry the same mentality of mass killings".