An investigation revealed that a prisoner who hanged himself had received "inadequate" help from mental health services.
Shane Stroughton, 29, was found dead in his cell at HMP Nottingham on September 13, 2017.
The Nottingham Coroner's Court found that the staff's workload was such that a full assessment had not been conducted.
The jury also stated that Stroughton's family had not been properly informed of his condition, particularly his mental state.
The investigation had already been revealed to Stroughton at the age of 19, who had been sentenced to indefinite term for assault and released under license by HMP Stocken in June 2017.
Three weeks later, he was sent to HMP Nottingham for violating his bail conditions.
He was then put on a high-risk program after attempting to commit suicide, but was later removed from this program.
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The jury concluded that the prisoner / staff ratio was high at the time and that their workload meant that Stroughton was not properly supervised.
This led to mental health services at the prison offering him "insufficient support".
In a narrative conclusion, the jury also stated: "The prison has failed to communicate properly with the family, especially in times of crisis."
However, the jury noted that prison staff had improved since then and that "the vast majority of staff members were working in Shane's best interest".
Shane Stroughton's death was one of five in a month in Category B jail.
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