At least 87 people were killed and more than 180 injured when a crane crashed through the ceiling of the Grand Mosque of Mecca amid high winds and thunderstorms today.
Dramatic footage shows the moment the crane toppled in heavy rain, with another video capturing the chaos and confusion inside the building after impact.
Upsetting photos posted on social media shows the polished tiled floor of the mosque covered in rubble, bodies and pools of blood, and people fleeing the area bleeding and covered in soot.
The tragic incident in Saudi Arabia occurred shortly before the 6:30pm Friday evening prayer session - one of the busiest times of the week - causing devastation to what is the largest mosque in the world.
Hundreds of thousands of Muslims are gathering at the holy site from all over the world for the annual hajj pilgrimage set to begin later this month.

A massive project is currently under way to increase the area of the mosque by 4.3million sq ft - so that it can accommodate up to 2.2 million people at once.
Pictures taken before today's disaster show the fatal crane being struck by a bolt of lightning and authorities are in little doubt that extreme weather was to blame.
Earlier, the Civil Defense had issued thunderstorm, heavy rain and wind warnings in the area. Authorities say search and rescue teams and medical workers from the Saudi Red Crescent are now working at the scene.

Inna lilahi wahina ilehin rojihuna.
Got the news from Sheikh Khalid Yasin facebook page. Very sad news.

May Allah SW grant them all Al-Janat Firidaosu, comformt their families.

Sad mood activated.

Inna Lillahi wa inna ilaihi raji'un