Marlon McIntosh, from Quinton
The mother of a 28-year-old found hanged in his prison cell has pledged to fight to find out the truth after an inquest returned an open verdict.
His devastated relatives were told by prison bosses that he had been found hanged.
His mum Marlene spoke out after the three-day inquest and said the family had always believed that Marlon had not taken his own life.
The 50-year-old says she was now planning to continue the fight to find out the truth behind the death of the dad of two young daughters.
The retail worker added: "We are pleased with the verdict, but it was only what we already knew.
"We knew he did not kill himself, but this verdict has opened even more questions that now need answering.
"I will not rest until I get the truth about my son's death. I just don't know where we go from here. We have to get some legal representation to get to the truth, but that is what I intend to do."
An investigation was launched into Marlon's death last year and a spokeswoman for the Prisons and Probation Ombudsman said they would publish a report in the next few days.
Marlene, who now lives in Winson Green and was off work for eight months after his death due to her trauma, added: "We owe it to Marlon to find out the truth about what happened.
Josh McIntosh, 20, (left) with brother Marlon Mcintosh, 28
"But another big part of all this is that my son and other prisoners should be protected whilst they are in custody. Nobody else should have to go through what we have been through and lessons need to be learnt."
Speaking after his death last year, his close friend Ryan Mooney said Mr McIntosh had been in and out of prison when he was younger but had stayed out of trouble before he was arrested on New Year's Eve last year on suspicion of shoplifting.
He was charged and a warrant for his arrest was issued in February when he failed to appear in court.
Ryan said: "He told me he wanted to get it (the prison sentence) out of the way so he could be out for his baby's birthday on Father's Day.
"He wanted to move on with his life."
Marlon received a nine-week sentence for theft and failing to surrender to police court bail but was due to serve half the term.
Security firm G4S, which runs Birmingham Prison, was not available for comment in spite of repeated requests.