In a bold predawn attack, gunmen stormed a hotel Wednesday in the heart of the northern city of Monterrey and kidnapped at least three people, officials said.

Mexican media said up to 50 hooded gunmen arrived in a convoy and burst into the downtown Holiday Inn, seizing guests and employees.

Law enforcement officials, offering only scant details by late afternoon, said it was not immediately clear whether a fourth person was seized or how many gunmen took part in the 3 a.m. attack. Authorities offered no motive for the kidnappings, but the attack bore the hallmarks of Mexico’s drug gang violence.