Ex-FBI agent Thomas Martens in protective custody as he's deemed 'at risk' from prisoners
Retired FBI agent Thomas Michael Martens (67) is now in protective custody within a maximum security US prison where he is starting a 20-year sentence for the murder of his Irish son-in-law Jason Corbett.
Martens was convicted, alongside his daughter Molly Martens-Corbett (33), of the second-degree murder of Mr Corbett (39) by unanimous verdict of a North Carolina jury following a marathon trial.
However, if the North Carolina Parole Board does not decide to grant them maximum remission on the remainder of their sentences, they could serve up to 25 years.
Both have signalled that they will appeal the convictions and sentences.
Martens's legal team had warned the trial, in the sentencing hearing, that any lengthy prison term for him could effectively represent a life sentence.
Before they left Davidson County courts complex, they were asked to change from their clothing and into regulation blue denims.
In Martens-Corbett's case, it was a blue denim dress and, in Martens's case, blue denim trousers and a light blue shirt.
Both were transferred to Raleigh prisons - some two hours away - in handcuffs and waist chains.
Martens is now being held at the notorious Central Prison in Raleigh.
Martens-Corbett is being held at North Carolina Correctional Institute for Women.
She is expected to undergo psychiatric evaluation as part of her prison processing.
Central Prison houses virtually all convicted murders in the northern part of North Carolina - and some of the most dangerous prisoners in the US.
The prison has a capacity of almost 1,200 inmates, many with gang affiliations.
It ranks as one of the toughest prisons in the southern part of the US and has a heavy presence of armed guards.
Martens served for 31 years in the FBI and will serve his sentence in a section of the prison where inmates are deemed to be at potential risk from other prisoners.