Update: Death toll of Hajj stampede now 310 as 450 others wounded..

The death toll from a crush of pilgrims on Thursday during the annual Muslim haj in Saudi Arabia has risen to 310 people of various nationalities, the Saudi civil defence said.

It said that civil defence teams were still trying to deal with the disaster, caused by large numbers of people pushing at Mina, outside the Muslim holy city of Mecca. Another 450 pilgrims were wounded, it said. The directorate said at least 450 other pilgrims were injured in Thursday's stampede, which took place in Mina, on the outskirts of the holy city of Mecca.

Some two million people are taking part in this year's Hajj pilgrimage, which began on Tuesday.

Al Jazeera's Basma Atassi, reporting from Mina, said the incident took place in a street between pilgrim camps.

"The street is named Street 204. This stampede did not happen during the stoning of the devil ritual, which was happening today."

About 4,000 rescue services personnel were participating in the operation to help the injured and about 220 ambulances were directed to the scene, a civil defence spokesman said.

Al Jazeera's Omar Alsaleh, reporting from Mecca, said the number of deaths may rise.

"This is only the initial number ... The Hajj season was already overshadowed by the crane accident that killed 107 people and wounded more than 200. That area has turned to a big massive construction site to allow more pilgrims to visit Mecca during Hajj."