An employee at the Osaka branch of Bank of Tokyo-Mitsubishi UFJ handling personnel matters was arrested over the weekend for a sexual assault on a female college student seeking a job, police said. He was sent to prosecutors Monday.

Masaya Shiraishi, 24, an employee at the bank's Nanba branch in Chuo Ward, allegedly lured the 21-year-old woman to a karaoke bar in the city April 8, hinting at an unofficial job offer, the police said.

What he offered instead, however, were unwanted kisses. He also pressed himself against her in a small compartment at the karaoke bar, according to police.

Shiraishi has admitted to the charge, they said.

Police believe that Shiraishi, who in his second year at the major bank was helping senior employees sort out job applications from college students, contacted the woman after he obtained personal information from her application form.

College seniors who expect to graduate next March are currently in the middle of their job hunts.

According to police, Shiraishi, passing himself off as a key personnel section employee with influence over decision-making, contacted the student by her cell phone and used a false name.

"Our screenings have found that you have earned high marks so far, and I would like to lend you more support" to obtain an unofficial job offer from the bank, Shiraishi was quoted by the police as saying.

At the karaoke bar, Shiraishi told the victim, "An unofficial job offer will be in your hands if you do as I say," the police quoted him as saying. After enduring the 20-minute assault, the female student fled and told police what happened.

They tracked down Shiraishi after examining video recordings at the bar, which had captured his face.