A man has been jailed for four years for a London Fields robbery, witness intimidation and possession of a knife.

Tyrone Harris, 24, of no fixed abode, was sentenced on April 17 following an investigation by police and his subsequent arrest in September last year.

Snaresbrook Crown Court heard how Harris sprayed a “noxious substance” into the face of a 53-year-old man who was walking along Lansdowne Drive on September 14 2014.

The man fell to the floor and lost consciousness and a passer by witnessed Harris taking a mobile phone from the victim’s hand and rifling through his pockets has he lay unconscious.

The victim received a slash above his right eye, a bruised jaw, swollen lip and a loosened tooth.

He was taken to an east London hospital for treatment.

Harris was arrested on 29 September 2014 and charged with robbery.

He was remanded in custody to appear at Thames Magistrates’ Court where he was subsequently bailed to appear at a later date.

While on bail on December 12 2014, Harris threatened the victim with a knife and called him an “informer”.

Harris was further charged on 12 December 2014 with witness intimidation and possession of a knife.

Detective Constable Mike Cosh, from Hackney CID, said: “Harris not only robbed the victim but also went on to approach him whilst on court bail. I hope this strong sentence serves as a reassurance to the public that the police and courts will do everything in their power to bring offenders to justice.”