A sudden jump in France’s daily death toll from Covid-19 stems from previously unreported cases in one hospital near Paris, according to statements by health authorities.

The health ministry reported on Friday that the total number of deaths from Covid-19 increased by 154 to 31,249, a four-month high in the daily death toll and triple the levels of the past week.

That figure included 76 deaths registered in a hospital near Paris, according to an explanatory note issued online by Santé Publique France, the country’s national health agency that reports new Covid-19 cases every day.