Teenager Nicholas Moss has been sentenced to eight years in prison after stabbing and robbing two men.
Moss,17, of Portland Road, appeared before Nottingham Crown Court on September 19 after pleading guilty to several offences at an earlier hearing.
Corey Mayes, 17, of Western Boulevard, appeared alongside him having already pleaded guilty to one count of robbery, of which he was convicted and given a Youth Rehabilitation Order.
The court heard that on Sunday 26 January 2014 a 20-year-old man had met Mayes outside the Crown pub, in Radford Bridge Road, Wollaton, after he told the victim he'd found his bike which had been stolen the week before, and they walked to a nearby park area.
There the victim was then surrounded by Moss and three other youths, one thought to be as young as 12, who threatened him with a knife and demanded his mobile phone - he was then stabbed in the chest and handed over his phone.
While the victim was taken to Queen's Medical Centre, where he received stitches for a three centimetre wound, the phone was exchanged for £30 and a bottle of brandy.
The following day at about 6.45pm, a 23-year-old man was attacked along a pathway which leads to Charnock Avenue.
The victim was walking towards Derby Road when he was surrounded by three youths who threatened him with a replica firearm.
The gang took his watch, mobile phone and wallet and when the victim protested he was stabbed in the leg.
The thieves run away but the victim gives chase and managed to retrieve his phone, albeit sustaining further 12 stab wounds in the process he was treated for ten separate woulds which required 12 stitches.
Detectives used CCTV and forensic analysis to link Moss and Mayes to the incidents.
They, along with two others aged 12 and 16, were arrested but the 12 and 16-year-olds were released without charge.
DC Chris Taylor said: "These were extremely serious incidents where not only were the victims robbed of their valuables they were injured and had to seek hospital treatment.
"By good fortune alone the organs of the victims were not struck by the knife during any of the stabbings otherwise we could be looking at a more tragic outcome. An appeal to the public at the time of the incidents was particularly useful in identifying the group responsible and I would thank those members of the public who came forward to us either directly, or through Crimestoppers.
"There is never a good reason to arm yourself with a knife or an imitation weapon and seek to commit violent offences in our towns and cities.
"I am pleased that the court has taken a strong approach to dealing with Moss and Mayes - so seriously that it has agreed to lift the anonymity usually granted to those under 18. I hope that this sends out a message that the Force takes incidents of violence and robbery extremely seriously and will seek to prosecute offenders where possible."
