A Tokyo graduate student whose wife was apparently having a romance with a co-worker burst into their office, beat the man nearly senseless, pulled down his rival's pants and snipped off his penis with garden shears, police say. He then flushed the severed genitals down the toilet, according to an AFP report. Police arrested the student, 24-year-old Ikki Kotsugai, shortly after the 7:40 a.m. Thursday attack at the law office in the city's Minato ward. Kotsugai is a former university boxer, according to public broadcaster NHK. He was charged with inflicting bodily harm. The condition of the victim, an unidentified 42-year-old lawyer, was not known. Kotsugai's wife was reportedly present when her husband charged in and began punching the paramour in the face.