A man has been arrested for hiring a female high school student for a Tokyo dating service after she allegedly ended up having paid sex with a 45-year-old customer, police said Monday.

The arrest was the first of its kind in Japan under a new Tokyo ordinance that took force in July outlawing the employment of girls under 18 for "JK" services. JK stands for joshi kōsei (female high school students).

Yutaka Tanaka, 27, was arrested Saturday on suspicion of hiring the 17-year-old without confirming she was of legal age.