Japanese police have arrested a man accused of bursting into a lawyer’s office and cutting off his penis with garden shears before flushing the organ down a toilet.

Ikki Kotsugai, 24, was arrested Thursday after he allegedly barged into his victim’s law office in Tokyo’s Minato Ward at around 7:40 a.m., punching the 42-year-old in the face several times,

The Tokyo graduate student at a university in Nakano Ward then ripped the unnamed man’s pants off while he was barely conscious and snipped off his genitals, a Tokyo police spokesman told the international news agency.

He allegedly admitted to the bizarre attack, telling police: “I cut off his genitals and flushed them down a toilet in the law office,” according to local reports.

Kotsugai is a former boxer at the university, public broadcaster reported. He has been charged with inflicting bodily harm.

The unnamed victim worked with Kotsugai’s wife, who was reportedly present during her raging husband’s rampage.