Stephen Ojerinola was stabbed, beaten unconscious and had concrete poured inside his hoodie before being buried in a shallow grave under a shed.
It is alleged that Stephen Ojerinola, 18, was dumped in a makeshift grave in the back garden of one of the attackers following the brutal attack in Kidbrooke, South East London.
It was learnt that William Regan and Lee Davies, who are accused of murder, then erected a flatpack Homebase shed on top of the teenager’s burial site.
The court heard that after arranging the ‘undignified and unlawful burial’, Regan phoned the victim’s girlfriend to ask whether she had seen him.
Ojerinola’s body was not uncovered until seven months after he disappeared during a police visit to Regan’s home.
Regan and Davies, both 36, are said to have attacked Mr Ojerinola at some point on April 11 or 12 last year but it was not until November 20 that police unearthed his remains.
His body – encased in concrete – was discovered by a trained sniffer dog following more than a day of excavation in Regan’s garden, said prosecutor Max Hill.
He added: ‘He was several feet down. Buried, therefore, beneath the shed, gravel, a tarpaulin, wooden boards, mixed rubble, loose soil and then the concrete.
‘As the team dug down, first his trainer shoe emerged from the earth and concrete.
‘Then a body, curled into a foetal position. His arms were in fact around a ball of concrete, hardened after it had been poured inside his hooded top.
‘He had been placed in that grave to rot.
‘The levels above him demonstrate, the prosecution say, the planning and effort put into concealing him and the callous disregard shown for this 18-year-old young man.
‘There was even, in fact, a Twix wrapper, discarded in one of the levels of his unlawful grave – discarded perhaps by one of those who worked so hard to ensure Stephen Ojerinola would never be seen by anyone again.’
Mr Ojerinola was lured to Regan’s home on the pretext of selling his attacker drugs, the court heard.
But instead, said Mr Hill: ‘He found himself in the company of two men, both twice his age with a tendency to explode into violence and a predisposition to use weapons to inflict injury on others.’
Regan had a criminal record including several burglaries – including one in which £10,000 or more was stolen just days before the killing.
He and Davies attacked Mr Ojerinola by stabbing him in the chest, inflicting a wound three inches deep, and knocking him unconscious with a hammer, jurors were told.
Five further stab wounds were also found on his neck, along with defensive wounds to his hands.
‘There may have been even more injuries than we know about,’ said Mr Hill.
‘His entombment underground for seven months, together with the action of concrete on exposed skin, means that areas of his face and body were badly decomposed and damaged leading to loss of skin and therefore possible loss of evidence of further injuries.’
In the days that followed, concrete cladding and the flatpack garden shed were purchased at a nearby Homebase store, with shingle and wooden wallboards delivered from a branch of Wickes, the court heard.
A new sofa bed was also bought on April 13, said Mr Hill.
‘Neighbours started to notice unusual activity including the delivery of a shed, flat-packed on the roof of a car, and nighttime digging in the rear garden that went on into the early hours of the following morning,’ he added.
‘Something was going on, carefully planned and carefully executed over those days in the middle of April.’
A few days later, Regan is said to have attended Queen Elizabeth Hospital in Woolwich, claiming he had cut his head and arm and broken a bone in his hand after falling out of a tree.
When police raided his home on November 20, much of the downstairs area had been freshly painted and the carpets removed, the court heard.
But a thorough forensic search by police revealed traces of Mr Ojerinola’s blood on the letterbox, walls and on a hammer and baseball bat found in Regan’s bedroom, it was said.
When he was arrested Davies claimed he had only been enlisted by Regan to help put up the shed and had been paid with half an ounce of cannabis.
Regan said the victim had come at him with a knife and will claim he was trying to steal the spoils of one of his burglaries, the court was told.
Mr Hill said: ‘This case is not about the shock and panic of innocent men, forced to kill in self-defence.
‘This case concerns the violent murder of a young man half the age of these defendants, who then calmly set about covering their tracks.
‘This was not the reaction of innocents but cold-blooded calculation of the guilty.’
Regan and Davies, of Chiswell Square, Kidbrooke, have admitted preventing a lawful burial but deny murder.
The trial continues.