A care home has been fined £120,000 over the death of a vulnerable resident who got through an unlocked door and fell down a set of stairs.

Mary Thom, 66, accessed the stairs through a doorway at Oakbridge Care Home, Glasgow, that should have been kept locked.

Despite being advised by the Health and Safety Executive (HSE) that doors leading to stairs should have a keypad or similar equipment, the Knightswood home put universal locks on all but one door.

Mrs Thom fell "approximately one metre" when she got through the door that had been left unlocked on February 9, 2013, and died from her injuries on July 9, that year.

At Glasgow Sheriff Court on Monday, Oakbridge Care Ltd were handed the fine by sheriff Paul Crozier after they admitted breaching health and safety laws.

He said the universal locks were "inadequate" and said it is "beyond his understanding" why the home did not act on advice given.

The sheriff said: "The company was aware of the particular needs of Mrs Thom and in my view failed to give those needs due regard."

He added Mrs Thom and her family "should have been able to confidently rely" on the home to provide a "safe environment to live her life".

Mrs Thom was a resident at the home from September 2011 and a care plan was in place for her, including hourly observations.

She used a walking frame to walk and had to be supervised when on her feet because she was unsteady.

The court heard that in October 2011 the HSE pointed out to the manager that doors leading to stairwells should have a keypad or similar system to prevent access to residents.

The following year there was a risk assessment at the area where Mrs Thom fell but the home fitted a universal lock instead of a keypad.

The court heard the area was regularly accessed and three members of staff used it on the day of the incident.

It was later discovered the door had not been locked.