A post-mortem examination into the death of former Foreign Secretary Robin Cook is due to be completed on Tuesday.
It is hoped the post mortem will reveal the cause of Mr Cook's death
Mr Cook, who collapsed and fell 8ft down a ravine while walking in the Scottish Highlands on Saturday, was pronounced dead later in hospital.
Pathologists are seeking to establish whether he died of an illness or injuries received during the fall.
The examination is taking place at Inverness' Raigmore Hospital, where Mr Cook was identified by his wife Gaynor.
The 48-year-old, who was at the former foreign secretary's side when he died, says her husband's love was the "greatest gift" she ever received.
She also praised her husband's "generosity, tolerance and integrity".
Mr Cook's sons Christopher and Peter, from his marriage to first wife Margaret, have travelled to Scotland from their homes in England.
Mr Cook was pronounced dead at Raigmore Hospital 90 minutes after collapsing on 2,365 ft Ben Stack.
His funeral is expected to be held on Friday at St Giles' Cathedral in Edinburgh.
It is thought Chancellor Gordon Brown will deliver the eulogy. Other speakers are said to include Madeleine Albright, the US Secretary of State under Bill Clinton, and John McCririck, the racing pundit.
A Downing Street spokeswoman said the prime minister was unlikely to break off from his holiday for the funeral, with his deputy, Mr Prescott, likely to attend instead.
Mr Cook's death means a by-election in Livingston, which he held with a 13,097 majority in May.