A grieving mum has branded the inquiry into her depressed son’s death a whitewash “covering people’s ­backsides”.

A sheriff ruled Dale Thomson’s death was “unavoidable” despite systemic failures at the Carseview psychiatric centre in Dundee.

“It is a box-ticking ­exercise for the health boards. It’s all about covering backsides.”

A sheriff ruled Dale Thomson’s death was “unavoidable” despite systemic failures at the Carseview psychiatric centre in Dundee

It’s the second time this year Carseview has been criticised for its treatment of patients who took their own lives.

It emerged in May that David Ramsay, 50, was found dead in October 2016 after being sent home and told he should walk his dog.

It has also emerged that 44 patients had to wait a year to begin therapy at the unit. Dad-of-one Dale, 28, had told his GP in January 2015 of suicidal thoughts and was sent to Carseview for an emergency assessment.

He was sent home but taken back in by police after he threatened to burn down houses.

Dale Thomson’s mum Mandy McLaren with Jackie Hawes, mum of Dundee footballer Harry Hawes

Again he was allowed out and went back to his GP on January 22, reporting the same symptoms. Dale was given an urgent ­assessment at Carseview the following day but was put on medication and told to go back to his GP if he felt worse.

Four days later, on January 27, he was dead.

During a fatal accident inquiry this year, ­procurator fiscal depute Steven Quither claimed a “chance was missed” by NHS Tayside staff to prevent the tragedy.

Mandy McLaren criticised the sheriff’s report

He said: “Further assessments should have been considered as Mr Thomson was exhibiting a wide range of bizarre behaviour and had a ­background of ­depression. But there was a lack of assessment and a chance missed. It may have led to a different outcome.”

Yesterday, Sheriff George Way released his report in which he said “there were no reasonable precautions whereby the death of Dale Thomson might have been avoided”.

But he listed a string of “relevant” factors relating to his death.

The sheriff said there were “serious systemic failures” in Dale’s care and added: “Whilst I cannot establish a causal link to his death, they are indisputably relevant facts.”

Dale was found dead four days after leaving the Carseview psychiatric centre

He wrote: “It seems to me that a window of opportunity closed when Mr Thomson realised nothing was ­actually happening.”

But he concluded: “The failures of Carseview are perfectly clear. They should not have occurred.

“I, however, accept that all these issues have been addressed and corrected. I have, therefore, no recommendations to make for the future.”

Mandy hit back: “This report is one contradiction after another. It’s a joke.

“Until things change, more young people are going to die – it’s as simple as that.”