Prison officers found a supply of the psychoactive substance Mamba together with cannabis and a mobile phone when they searched an inmate’s cell at Lincoln’s Greetwell Road jail.
Jake Read, was approached by officers after he was seen acting suspiciously while sitting on the top bunk bed of his cell.
Philip Plant, prosecuting, told Lincoln Crown Court that when the mobile phone was recovered from Read he admitted to prison staff “It’s mine. I’ll be taking the wrap.”
Mr Plant said that drug search dogs were brought in and a single wrap of cannabis was found hidden inside a bag of sugar in the cell.
A total of seven wraps containing Mamba were found under the mattress.
Read, 23, of no fixed address admitted three charges of possession of a banned item while in custody on November 17 2016.
The court heard that at the time of the incident Read was a serving a prison sentence for harassment.
Grace Hale, in mitigation, said that Read has already been punished by the prison authorities as he had his privileges removed and was placed in segregation.
She told the court: “He was released from his original sentence in January. He complied fully with his licence terms.
“He formed a relationship and has a baby on the way and he has found full-time employment as a roofer.”
Read was jailed for eight months.