Police are appealing for witnesses to come forward following the fatal Jim Clark Rally crash near Swinton, and the accident two hours earlier on the Eccles stage.
Officers are particularly interested to speak to anyone who has video footage or photographs of the rally, and may have captured either of the collisions, which resulted in the death of three spectators and injuries to another six.
Forensic specialists continued their work after the crashed car on Swinton House Road was removed from the scene on Sunday and the bodies were recovered.
Justice secretary Kenny MacAskill and Scotland’s chief prosecutor, Lord Advocate Frank Mulholland, were briefed by police in Kelso on Monday.
Chief Superintendent Gill Imery said the police investigation involved painstaking work. “The investigation is at an information-gathering phase,” she said. “We are looking to gather all of the information so that decisions can be made on the progress and the direction of that investigation.
“If people have got footage of the incident, or indeed information about that, there is a plea today for people to come forward and contribute that information – and be assured it would be taken account of.”
On the question of whether the spectators involved had been standing in an area where they should not have been, Ms Imery said: “That’s not something I’m able to confirm at this time. That will form part of the investigation.”
z Police Scotland is asking members of the public to email any video clips of the Jim Clark Rally to email@example.com.