A troubled son snapped during the coronavirus block and killed his father in the family home – and then wrote a note in the blood explaining his actions.
Nicholas Mooney, 23, killed James, 60, before committing suicide.
It is understood that he stabbed his father and then turned the knife on himself.
Agents who arrived at their £ 300,000 home in Ralston, Paisley last Thursday evening found notes written with blood – and blood all over the property.
Nicholas – who is believed to have suffered from mental health problems – also used an iPad to explain what he had done.
An area around the Lanfine Road property was sealed while forensic agents fought it for clues. But sources revealed that the agents faced a horror scene when they arrived to investigate.
A source said: “It was a murder-suicide – and it’s an absolute tragedy.
“There were notes written with blood in the house. Nicholas stabbed his father and then killed himself in the bathroom. He left a bloody note on the shower screen where they found him.
The note said something like “It has nothing to do with anyone else.”
“There were arrows drawn in blood on the note, which pointed downward on his iPad, which was on the bathroom floor. The iPad had more details on it.
When the police arrived, there was nothing to investigate: what had happened was written for them in blood.
“But they had to follow the protocols and conduct an adequate investigation, just to be on the safe side.
“It is truly a tragedy: two lives taken and one family canceled.”
Investigative inspector Erin Renwick, of the Scottish police investigation team, said: “After the post mortem tests, the death of the 60-year-old is treated as a murder.
The death of the 23-year-old man is not considered suspicious.
“Although our detailed investigation continues to establish the exact circumstances, we believe it was contained in this house and we are not looking for anyone else in connection with this incident.”