The federal home ministry's

Prisoners could obtain a maximum of 100 good behaviour points per month for doing things like studying Communist Party literature, working in the prison factory or snitching on other prisoners. Once 4,200 points were accumulated, they could in theory be used to reduce prison time.If you do the maths, that would mean a prisoner would have to get maximum points every single month for three-and-half years before this could start to work.

Radalj said that in reality it was used as a means of psychological torture and manipulation.He claims the guards would deliberately wait till an inmate had almost reached this goal and then penalise them on any one of a huge list of possible infractions which would cancel out points at the crucial time.These infractions included - but were not limited to - hoarding or sharing food with other prisoners, walking "incorrectly" in the hallway by straying from a line painted on the ground, hanging socks on a bed incorrectly, or even standing too close to the window.

Other prisoners who spoke about the points system to the BBC described it as a mind game designed to crush spirits.Former British prisoner Peter Humphrey, who spent two years in detention in Shanghai, said his facility had a similar points calculation and reduction system which was manipulated to control prisoners and block sentence reductions.

"There were cameras everywhere, even three to a cell," he said. "If you crossed a line marked on the ground and were caught by a guard or on camera, you would be punished. The same if you didn't make your bed properly to military standard or didn't place your toothbrush in the right place in the cell.

"There was also group pressure on prisoners with entire cell groups punished if one prisoner did any of these things."After the attack, he left towards Dublin Street.

Police Scotland said door-to-door inquiries were continuing.Local residents and businesses have been urged to check storage areas or lock ups and to report any suspicious items or behaviours.

It's an interesting question – perhaps a little niche. But it's certainly not a question you'd expect to find a senior member of Kemi Badenoch's team openly pondering.The shadow cabinet minister went on to stress that they were more optimistic: that the resilience of what is often called the world's most successful political party should never be underestimated.