A Saudi inquiry commission investigating the deadly crane crash at the Grand Mosque in Mecca has found a construction company owned by Al Qaeda founder Osama Bin Laden's family "partly guilty" for the accident.

The commission, set up at the behest of King Salman, has now suspended the Saudi Binladin Group (SBG), run by Osama Bin Laden's brother. It will now review all the projects handled by SBG, Saudi Press Agency (SPA) reported.

Citing government investigators, SPA reported that SBG was "partly responsible for the accident" and "had not respected the rules of safety".

The crane crashed on top of the Grand Mosque, killing at least 115 Haj pilgrims, including 11 Indian nationals

"The position of the crane was in violation of operating instructions prepared by the manufacturer," said the investigators, who are expected to deliver a full report on 18 September.

SPA also noted that the board directors of the construction company owned by Osama's brother Bakr Bin Laden have been banned from travelling out of Saudi Arabia.

The suggestions of the review committee are expected to cause a major dent to the business of SBG, which is handling some major projects, including building of King Abdul Aziz International Airport and major renovation work in Mecca and Medina.

SBG was founded in 1931 by Mohammad Bin Laden, the father of Osama Bin Laden.