Convict accused of Theresa Riggi attack in Cornton Vale
A female convict has been charged with assaulting triple child killer Theresa Riggi by allegedly throwing her down a flight of stairs in prison.
Riggi, 47, is serving 16 years in jail for killing her three young children at their flat in Edinburgh in August 2010.
She was said to have been left badly injured by the attack in Cornton Vale prison, near Stirling, on 22 October.
A Central Scotland Police spokeswoman said: "A 22-year-old woman will be reported to the procurator fiscal."
The force is also continuing to investigate a separate attack on Riggi, who was slashed in the face with a sharp object on 19 November.
The spokeswoman added: "We can confirm that a 47-year-old woman was attacked in Cornton Vale prison. Inquiries are ongoing."
A Scottish Prison Service spokesman said it did not comment on individual prisoners.
Riggi's three children - twin sons Austin and Luke, eight, and daughter Cecilia, five - were found with stab wounds after a suspected gas explosion at the flat in Edinburgh.
California-born Riggi was found badly injured after plunging from a second-floor balcony in an apparent suicide attempt.
The family had moved to the city from Skene in Aberdeenshire following the break-up of her marriage to the children's father, Pasquale Riggi.
The court heard Riggi had been a protective mother who was involved in a custody battle with her estranged husband over access to the children.
She was initially charged with murder but later jailed for 16 years after admitting culpable homicide on the grounds of diminished responsibility.
Lord Bracadale described the killings as "truly disturbing" and "grotesque".