The death sentence has been finalized for a man charged with killing nine people at his apartment near Tokyo.
The Tachikawa branch of the Tokyo District Court sentenced 30-year-old Shiraishi Takahiro to death last month. The court says the deadline to appeal the ruling was Monday.
The remains of eight women and a man between the ages of 15 and 26 were found at Shiraishi's apartment in Zama City, Kanagawa Prefecture in 2017.
Shiraishi had used social media to contact women who posted suicidal thoughts. He faced multiple charges, including sexual assault, murder, and abandoning the victims' remains in cooler cases.
The court said the case caused shock and unease in the age of social media, and that the crime stands out for its brutal nature.
Defense lawyers had appealed the ruling, but Shiraishi later withdrew the motion.