A man found dead in his bathtub after throwing his furniture around his bedroom and writhing around his living room floor like a swimmer entered a “fatal lottery” after taking 'Superman pills' at his flat in Worcester Park, a coroner said today.

Bulgarian Rosen Ivanov, 27, was found dead in his blood-stained flat in The Avenue, Worcester Park on the morning of August, 21 last year.

From August: Man arrested as body found in Worcester Park house

From August: Man found dead in Worcester Park flats named as Bulgarian national Rosen Ivanov

His flatmate and friend of ten years, Dinko Karavalchev had frantically sought help from a neighbour after the pair had spent the night of August 20, 2015, drinking and taking drugs at their flat in Rushmere Court.

From August: Young man found dead in Worcester Park flat was Bulgarian Chelsea football fan Rosen Ivanov

After drinking an unspecified amount of whisky and vodka they took a line of methylenedioxy-methamphetamine (MDMA) and what they believed to be ecstasy tablets. The pair had bought three tablets emblazoned with the Superman ‘S’ logo on them earlier that night.

After taking two thirds of two of the tablets, Mr Ivanov, who worked as a project manager for a printing company in Colliers Wood, began to hurl his bedroom furniture around the room and lay on the floor, Mr Karavalchev told the court.

He then snorted another two thirds of a third pill, Mr Ivanov stripped to his underwear in the living room and writhed like a swimmer under the pair’s living room table.

While giving evidence at Woking coroner’s court through an interpreter, Mr Karavalchev broke down in tears.

He said: “I asked him, ‘Are you going to die?’ I have never seen such a strange movement.

“It happened quite fast. After that, his eyes popped out and I ran away from the bathroom to get help.”

Paramedics from the South East Coast Ambulance Service (SECAmb) and officers from Surrey Police were called to Rushmere Court at 6.38am.

Surrey Comet:

Mr Ivanov was pronounced dead at the flat.

In a statement read to the court, SECAmb paramedic Oliver Reed wrote: “Within five minutes of arriving at the flat it became clear Mr Ivanov was deceased. When I tried to lift his arm I could tell that rigor mortis had set in.”

Mr Ivanov’s mother, Nadca Donewa, travelled from Bulgaria for the inquest. She asked Mr Karavalchev why he did not call the police sooner.

He answered: “I thought he would get better. The thought of calling emergency services never occurred to my mind.”

Ms Donewa replied: “As a mother, I just want to say that [Mr Karavalchev] should have helped [Mr Ivanov], and he should be living.

Mr Karavalchev was arrested in connection with his friend’s death before being released with no further action taken.

From November: No further action taken against 33-year-old arrested in connection to Worcester Park death of Rosen Ivanov

Commenting that rigor mortis can take between two and six hours to set in, Surrey coroner Simon Wickers said: “There is a clear discrepancy of timings.

“We will never know the true extent of the timings between Rosen’s death and help being called for.

“What is clear is that the timings don’t appear to add up. Without clear timings neither this court, nor his family, will ever know whether earlier intervention could have saved Rosen.”

Surrey Comet:

Pathologist Dr Benjamin Swift carried out a post-mortem on Mr Ivanov.

In a statement read out in court, he wrote: “He was wet and appeared to show numerous injuries externally, but no significant injuries in areas frequently targeted in an assault.”

Dr Swift’s post-mortem verdict was that Mr Ivanov died of Para-Methoxymethamphetamine (PMMA) and methylenedioxy-methamphetamine (MDMA) co-toxicity.

Surrey Comet:

Rosen Ivanov

Mr Karavalchev told the court he was aware of Mr Ivanov taking drugs recreationally only three times since coming to the UK from the city of Stara Zagora in Bulgaria looking for work in 2014.

Delivering his verdict, Mr Wickers said: “Rosen’s death highlights the dangers of taking tablets, the contents of which are completely unknown to the taker.

“You may think you know what it is, it might look like what you think it is, but the reality is you don’t know what is contained in a tablet such as this.

“Rosen’s death highlights what a fatal lottery taking such tablets it.

“The fact that they did not appear to be affecting him lured Rosen into taking a greater quantity which in turn was fatal. If you take such tablets, you take the risk.”

A spokeswoman from Surrey Police confirmed that the investigation into Mr Ivanov’s death has been closed.