Police sent to prosecutors Friday the case of a former female lawmaker who made headlines for verbal abuse on suspicion of assaulting and injuring her former male secretary.

Mayuko Toyota, a 43-year-old former House of Representatives member, left the ruling Liberal Democratic Party in the wake of the abuse scandal and lost her Diet seat in Sunday's general election in which she ran as an independent.

 Scandal-hit politician loses seat in Japan election

Japanese lawmaker to quit party over alleged abuse (Audio)

She drew attention after the Shukan Shincho weekly magazine claimed that Toyota, who was sitting in the back seat of a car driven by her then secretary in his 50s in May, yelled at him and struck him several times on the head and face.

Shukan Shincho uploaded an audio file of the incident claimed to have been recorded by the secretary, in which a woman can be heard hurling insults such as "baldy" and "You should die."

At a press conference in September, Toyota apologized for verbally abusing the secretary but denied assaulting him, saying, "I have never inflicted serious injury on him by being violent."

Toyota worked at the Ministry of Health, Labor and Welfare before being elected as a lower house lawmaker in December 2012.

In Sunday's lower house election, she ran in the No. 4 single-seat constituency in Saitama Prefecture, north of Tokyo, seeking a third term.