A 9-year-old Minnesota boy was suspended from school for performing a Michael Jackson dance routine during a fundraiser -- complete with the late King of Pop's signature groin grab.

Lenny Boberg and his mother, Mindy Boberg, were approached Thursday immediately after the "Billie Jean" performance by St. Stanislaus Principal Pal Bowlin, who Mindy Boberg said told her the move constituted gross misconduct, the Winona Daily News reported.

Mindy Boberg said her son had performed similar Michael Jackson routines the past two years, and this year's performance had been approved by school officials at a Tuesday rehearsal.

Bowlin sent an email to district parents, and planned to meet with the Bobergs on Monday about the suspension.

"On behalf of the Winona Area Catholic Schools, I would like to thank all the students, teachers, parents, and friends of our school for your support of our Lip Sync contest. So many people worked incredibly hard to make it a great event. We did have one act that was clearly inappropriate. I want to extend my apology for that situation," the email read.