Mexico City shuts down classes again, enters higher COVID-19 risk tier

FILE PHOTO: A child receives hand sanitizer while arriving at the Ignacio Zaragoza elementary school as Mexico City's authorities resumed in-person classes today after a downward trend in the number of infections and hospitalisations of the coronavirus disease (COVID-19), in Mexico City, Mexico June 7, 2021. REUTERS/Luis Cortes/File Photo

MEXICO CITY (Reuters) - Mexico City schools that had just gone back to in-person classes will be closed again starting Monday as the sprawling capital climbs into a higher tier of coronavirus risk, education authorities said on Saturday.

Mexico City officials had loosened restrictions on gatherings in schools, hotels, stores and restaurants just two weeks ago as the dense urban zone moved into the lowest risk tier of the government's four-level "traffic light" model.