Zakk Sackett is serving a life sentence for the murder of 16-year-old schoolgirl Jessie Wright.

A man serving a life sentence for brutally strangling his 16-year-old friend and dumping her body has �renewed a bid to overturn the conviction.

Zakk Sackett, 20, formerly of Outram Place, off Copenhagen Street, Islington, was found guilty at the Old �Bailey last April of murdering �Jessie Wright, of the Bemerton Estate, off �Caledonian Road, Islington.

Her bloodied body was found lying at the bottom of a 15ft wall near Sackett’s home, with her clothes in disarray, 14 hours after her death on March 4, 2010.

Just minutes after the murder, Sackett was said to have tried to sell her mobile phone for �30.

Sackett, who has learning difficulties, spent the most part of his trial behind a screen due to him being deemed as a “vulnerable �defendant”.

He claimed that the death was a tragic accident, after Jessie consented to sex and he put her in a head-lock.

He has already had one bid to challenge the conviction turned down, but is renewing his case at the Court of Appeal next month.

He is also set to appeal against the 25-year minimum term which he was �ordered to serve by Judge Timothy Pontius after his conviction by the jury.

As a judge has already �rejected one appeal application, Sackett will first have to convince the Court of �Appeal that his case is “arguable” before it will be �reconsidered.

However, he already has permission for a full appeal of the minimum term he must serve before being allowed to apply for release on licence.

The case is set to go before three senior judges within the next month.