A man who left paralysed after being involved in a car crash in Pakistan took his own life, an inquest heard.

Nayyar Janis, 45, of Gammons Lane, Watford, took an overdose of pentobarbital – a sedative – in June, 2015.

At the inquest on July 5, Coroner Geoffrey Sullivan concluded Mr Janis had willingly taken his life.

The post-mortem found a high dosage of the drug in his blood in what was initially believed to have been an accidental overdose.

Mr Janis, a lecturer, was a paraplegic and used a wheelchair. His brother Khalid Chohan said Mr Janis was still independent and took his own medication.

The inquest heard Mr Janis was being treated at the University College Hospital in London for stomach pains. His weight kept dropping and he was admitted to hospital in 2014 for psychological problems and an eating disorder.

His general practitioner, Dr Richmond, believed Mr Janis did not suffer from depression but became frustrated with the hospital.

On June 1, Mr Janis’ nephew Zolkernain Chohan was staying at his uncle’s house as he became the carer. During the inquest Mr Chohan said in a letter read out by Coroner Sullivan how he could see his uncle struggling.

He said: “My uncle never complained about anything. I got on well with him.”

On June 2 Mr Chohan called an ambulance after finding his uncle lying on the floor when he took him his breakfast.

Danielle Briggs, of East of England Ambulance Service, confirmed Mr Janis was dead upon their arrival and rigor mortis was already taking place.

During the investigation Detective Constable Tanzeem Saddiqui found screenshots of suicide websites and euthanasia sites on Mr Janis’ iPhone smartphone.

Khalid Chohan said he knew about these websites as paraplegics use these to talk openly talk about things.

DC Saddiqui found around 12ml of pentobarbital as well as 3.5 grams of another class B drug at the scene. Also found were two notes detailing how Mr Janis had willingly decided to kill himself.

In the notes Mr Janis said he was very sorry but could not see any other way. He thanked his family for looking after him over the years.