At least 65 people killed, 154 injured in crane accident in Makkah's Grand Mosque, Saudi Civil Defense @KSA_998 is reporting— Saudi Embassy (@SaudiEmbassyUSA) September 11, 2015
The authority announced the latest casualties' figure from Friday's accident on its official Twitter account.
The accident happened as pilgrims are streaming into Islam's holiest city for the annual hajj pilgrimage later this month.
Videos and photos posted by social media users showed a grisly scene, with police and onlookers attending to bloodied bodies on the polished mosque floors.
Mecca is Islam's holiest site. Millions of pilgrims from around the world will converge on the city and the mosque for the annual Hajj pilgrimage, which takes place later this month.