Two four-story buildings housing eight families collapsed overnight in the Moroccan city of Fes, killing 19 people in the second fatal collapse there this year, authorities said on Wednesday. Sixteen people were injured in the collapse. The neighbourhood has been evacuated and search and rescue efforts were ongoing. It was unclear what caused the collapse or how many people were unaccounted for on Wednesday morning.

Fes is Morocco’s second-largest city and one of the hosts of this month’s Africa Cup of Nations and the 2030 FIFA World Cup. It is known for its walled city packed with medieval souks and tanneries. But beyond tourism, it’s also one of the country’s poorest urban centres, where aging infrastructure is common.