Four men have been locked up for a combined total of more than 40 years after going on a robbing spree in Stapleford and Derbyshire.
It first began in Ilkeston at around 11pm on August 21, 2015, when the group targeted a 22-year-old year-old man as he walked along New Lawn Road. He was punched and kicked and had his mobile phone taken from him.
They then punched and kicked a 15-year-old boy on Kingsway and made off with his rucksack.
The team then travelled to Stapleford where they attacked a 55-year-old man as he walked home from work on Hickings Lane. He was repeatedly kicked in the head before his mobile phone was taken from him. He was found around an hour later by a resident having been left for dead in the middle of the road.
Finally, the group travelled to Sandiacre where they attacked a 28-year-old man as he walked home along Hayworth Road following a night out. He had his mobile phone taken and was left with a fractured skull, bleed to the brain and now has life-changing injuries.
All four robberies were committed in the space of around 35 minutes.
Following extensive CCTV, forensic and telecoms work in a collaboration between Derbyshire and Nottinghamshire police, four men were arrested and charged for conspiracy to commit robbery.
They were all sentenced on Tuesday.
Rees Tams, 25, of Stanley Street, Derby, received nine years' imprisonment, Callum Richmond, 19, of Bakewell Drive, Top Valley, was sentenced to nine years, seven months and Nathan Wooltorton, 25, of Wellington Street, Long Eaton, received ten years, three months behind bars having all pleaded guilty.
Kyle Tams, 29, of Windermere Gardens, Long Eaton, who pleaded not guilty but was convicted following trial, was sentenced to 12 years.
Detective Constable Tony Tonks, of Nottinghamshire Police, said: "This was a collaborative case between Nottinghamshire and Derbyshire Police involving extensive forensic, phone work and CCTV enquiries.
"The group committed a series of extremely violent attacks completely at random in the space of around half an hour, all for the sake of a few mobile phones.
"The victims' lives have been permanently affected and we hope they find some comfort from the sentencing.
"We hope that this result sends the message out that no matter where the offence takes place, we will use all means available to bring those to justice."