A member of U.S. President Joe Biden’s advance security team has been arrested in Seoul, accused of drunkenly assaulting a South Korean citizen a day before Biden arrived on a visit, police said on Friday.

The team member, who works for the U.S. Department of Homeland Security, was detained in the early hours of Thursday after getting into a fight over a taxi, an official at Yongsan district police told Reuters.

The incident occurred outside the Grand Hyatt hotel, where Biden is expected to stay.