text: A prisoner who helped stab a man in a random attack has been posting photographs of himself posing in his cell on Facebook - just a day after another inmate was filmed partying in jail. Royston Coates, who is serving a 10-year sentence for wounding, boasted about watching TV from prison and showed off his muscles in a string of pictures. He also encouraged friends to call him on his mobile - even though both phones and social media are banned in all prisons. It is the second such incident to emerge within two days, after a murderer was caught drinking prison hooch in a video he shared online. Scroll down for video . Jail: Prisoner Royston Coates has posted a string of photographs from inside his jail cell . Inmates: Coates posed up alongside another prisoner in one of the photos on Facebook . Prison authorities have now shut down the criminal's Facebook account after being alerted to the messages he has posted. Over the past six months, Coates has repeatedly sent out messages to his 300 Facebook friends updating them about his life inside jail. His messages reveal that he has been allowed to watch popular TV shows such as The X Factor and The Only Way Is Essex, as well as an England football match. Photographs taken last month show that he has a television set and DVD player in his cell, with the walls covered in photographs. Facilities: Coates's cell has a television and DVD player, and is covered in photographs . Mugshot: Coates was sentenced to 10 years in prison in 2013 for attacking a man . In one of the first posts, from last October, Coates joked: 'Go out or stay in? Hmmmmmm.' In another message, he claimed he was 'glad I am locked away' so he wouldn't have to mix with other people in his home town of Macclesfield, Cheshire. A spokesman for the Prison Service said they were investigating the matter, and had asked Facebook to close the page. Coates was jailed in October 2013 alongside his friend Hayden Whittaker after he admitted helping to stab a man with a kitchen knife. He held the victim down while Whittaker knifed him, shortly after the pair had failed to get in to a block of flats where they were trying to sell drugs. Killer: Dashem Tesfamichael, 30, who was jailed for stabbing a young father, has been filmed partying behind bars, it emerged yesterday . Coates later boasted about what he had gone, sending a text message to friends in which he said 'I put the gun to his head.' The victim suffered a collapsed lung following the savage attack. A prisons spokesman said: 'Anyone caught accessing social networking sites or instructing others to do so on their behalf will be subject to strict disciplinary action. 'No prisoner should be in any doubt that if they break the rules they will be stripped of privileges and may be reported to the police for further action, which may result in extra time being added to their sentence.' It is not known which jail Coates is serving his sentence in. His photographs emerged just a day after a murderer was filmed partying to prison hooch and singing along to rap lyrics in a video shared on WhatsApp. Dashem Tesfamichael, 30, who stabbed a young father to death in 2006, clutched a glass of illegal alcohol in the clip, which also showed a large stash of party food. The footage was captured on a banned mobile phone before being sent out to friends of the prisoners involved.
target: Royston Coates was jailed for 10 years for holding down a man while his friend stabbed him in a random attack .
  But he has posted a series of photographs of himself on Facebook .
  Social media account has now been shut down by prison authorities .
  Comes a day after a convicted murderer was pictured partying with illegal alcohol in a film which he shared online .