The family of three victims of the Glasgow bin lorry crash have launched a bid to prosecute the driver Harry Clarke.
Six people died when the truck went out of control in Queen Street in December 2014.
A Fatal Accident Inquiry (FAI) held last year heard Mr Clarke lost consciousness at the wheel and that he had a history of health issues - including a previous blackout in 2010 when at the wheel of a stationary bus - but had not disclosed his medical background to his employers or the DVLA.
The Crown Office has consistently said that there is insufficient evidence in law to raise criminal proceedings against Mr Clarke but the families of the victims disagree.
It was revealed during the FAI that some families intended to launch a private prosecution if the Crown Office would not take action.
Lawyers for the family of Jack and Lorraine Sweeney and their granddaughter Erin McQuade have confirmed a Bill of Criminal Letters has been sent to the Crown Office that they hope will lead to a prosecution.