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

MEXICO CITY: 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. But the federal Health Ministry on Friday evening put Mexico City, home to more than 9 million people, a step higher on the scale for June 21 to July 4.