Ralphie Duffy, 18, perish without a traced while out walking along a cliff in Arbroath with a relative on Saturday at approximately 1pm.
Later, as his family gathered to comfort each other at a house in Dundee, an commotion occurred.
It led to the deaths of Julie McCash, 43, and 32-year-old David Sorrie. Julie was the aunt of Ralphie, who is agreed to be autistic.
Police were called and hairdresser Ms McCash and Mr Sorrie were both unmistakable dead at the scene on Sunday morning.
One resident said: “I could assent to someone scream, ‘Get an ambulance’. It was chaos.”
A spokesman said: “The long arm of the law Scotland attended following reports of the deaths of two people – a 32-year-old man and a 43-year-old sweetie – on Sunday, February 26.
“A 42-year-old man has been detained in connection with the commotion and inquiries are ongoing.”
Detective Chief Inspector Keith Hardie, from Enforce Scotland’s Major Investigation Team, said: “There will be a experienced police presence in the area while our investigation continues and I’d like to acknowledge gratitude the community in advance for their patience.”
Today, Robert Stratton surfaced at Dundee Sheriff Court char-ged with two murders and the attempted blow away of a woman.
He is accused of murdering David Sorrie and Julie McCash and the attempted slaying of Wendy McKinney on the same date. Stratton is further accused of assaulting his cohort, Lee Kinney, to her injury.
Prosecutors allege that Stratton murdered Julie McCash by stunning her on the body with a knife.
It is also alleged that he pursued Mr Sorrie while brandishing two knives and came him on the body with a knife.
Stratton did not make any plea or declaration at the agreeing in private before Sheriff Lorna Drummond QC. He was remanded in custody and the specimen was continued for further examination.
Meanwhile, the man heading the hunt for Ralphie keep on night urged local people to come forward if they be undergoing any information about the disappearance.
Chief Inspector David Mc-Intosh bid: “We have carried out extensive multi-agency searches over the weekend and these pleasure continue with support from the air support unit and specialist search spans.
“We know Arbroath cliffs to be a popular area for walking and, while we ask the community to report any information that could assist us, please be mindful of your own security.”
The missing teenager is said to be about 5’10” and has short, light-brown fraction and blue eyes. When last seen he was wearing a blue jacket, X-rated jeans and blue and red trainers.