At least 700 people died in a stampede during the Muslim holy pilgrimage to Mecca

At least 717 people were killed and 863 were injured this morning in a stampede during the yearly Islamic pilgrimage, or hajj, to the city of Mecca in Saudi Arabia. Those numbers have been climbing steadily over the past few hours—the latest numbers were confirmed by Saudi civil defense officials, and also by state-run television stations citing Saudi civil defense officials, according to CNN.

The stampede took place around 9am today (Sept. 24), on the first day of the Muslim holiday Eid al-Adha, in the city of Mina, located just a few miles outside of Mecca.

Saudi civil defense officials have said that 4,000 workers and 200 ambulances have been dispatched to the scene. The New York Times reports that hundreds have been taken to two emergency hospitals that have been set up in Mina.

This incident comes just 13 days after a crane collapsed at the Grand Mosque in Mecca, leaving at least 107 dead and 394 injured as of the latest reports.

At the time of this reporting, the initial cause of today’s stampede is unknown.