Body parts of nine people have been found in one of the units of this apartment building in Zama, Kanagawa Prefecture. (Video footages taken by Yuhei Iino and Kazuhiro Nagashima)

A man whose apartment contained the body parts of nine people said he killed the victims for their money and “obscene purposes,” according to Tokyo police.

Takahiro Shiraishi, 27, also said he didn’t really know any of the victims, whom he lured to his apartment in Zama, Kanagawa Prefecture, through social media, according to the Metropolitan Police Department.

Shiraishi, unemployed, was arrested on Oct. 31 on suspicion of abandoning the body of one of the nine people, eight of whom were women, after police found heads, legs and arms in storage boxes and coolers in his apartment.

His case was sent to prosecutors on Nov. 1.

Police suspect Shiraishi found suicidal women on the Internet and pretended that he also wanted to kill himself, posting, “Let’s die together.”

After they showed up, he invited them to his apartment where he killed them and took about 500,000 yen ($4,390) in total from the bodies, according to police.

Further information on his “obscene purposes” was unavailable.

According to police, the first victims were an unmarried couple.

In August this year, Shiraishi had a meal with the couple with whom he had become acquainted through Twitter.

On a later day, he invited the woman to his apartment, where he killed her, according to police.

The woman’s male acquaintance, unable to contact her, asked Shiraishi if he knew where she was. Shiraishi also invited him to the apartment and killed him, police said.

Shiraishi told police he killed most of the nine people when he met them in person for the first time.

Some of the nine people had posted suicidal messages on the Internet, and Shiraishi promised to meet them directly after exchanging messages online.

“I don’t know their real names or their ages,” police quoted Shiraishi as saying about the nine people.

He also told police that the killings started after he moved to the apartment in Zama on Aug. 22.

Police have found nine human heads and about 240 pieces of bones and other body parts in his apartment.

“I was unable to dump them because I thought that doing so would bring (the killings) to light,” police quoted Shiraishi as saying.