A pane of glass fell ten floors from the £842 million hospital earlier this month. It is understood the pane shattered near the front entrance of the building on but nobody was believed to have been injured.

NHS Greater Glasgow and Clyde (NHSGGC) said an investigation into the incident proved inconclusive.

According to reports by STV, panels have fallen from the building on at least three occasions since it opened in April 2015.

An NHSGGC spokeswoman said: “It has not been possible to establish the cause of this decorative external glass panel shattering before falling to the ground on 9 August.

“The shattered pieces recovered were not large enough to analyse and determine the cause.

“However, the safety of our patients, visitors and staff is our paramount priority which is why we have installed safety netting where these panels are situated on the building.”

Last year it emerged that cladding similar to that found on Grenfell Tower in London is to be removed from the QEUH as a precautionary measure.

The Kingspan Kooltherm K15 insulation boards are not believed to be connected to the falling panels.