Saad al-Hilli, 50, was shot with his wife Iqbal, 47, his mother-in-law and a cyclist near Annecy.
BBC: French Alps murders: Uncle's concerns over police probe
Abiodun David John allegedly tried to access accounts in the name of al-Hilli family members after the killings.
BBC: Alps al-Hilli family murders: Man charged in fraud inquiry
Saad al-Hilli, 50, from Surrey, was found dead in his car, along with his wife and her 74-year-old mother.
The friends requested not to disclose the specific details as they do not want to upset the al-Hilli family.
BBC: French Alps murders: Victim had money worries over home
Mr al-Hilli's daughters are believed to be the only witnesses to Wednesday's killings, and both are under police protection.
Investigators in France and the UK have been examining Saad al-Hilli's business interests.
BBC: French Alps murders: Victim had money worries over home
Matt Perkins, of Surrey Satellite Technology (SSTL) where Mr al-Hilli worked, issued a statement following official confirmation of his death.
Investigators are also examining Mr al-Hilli's connections to Iraq where he was born - he came to Britain in the 1970s.
BBC: French Alps murders: Victim had money worries over home
Their mother Iqbal and a woman thought to be Mr al-Hilli's 74-year-old mother-in-law, a Swedish national, were killed during the attack.
Officers have been investigating Mr al-Hilli's work as an engineer, his family connections and possible links in Iraq, where he was born.
Mr al-Hilli's dentist wife Iqbal, 47, her mother, Suhaila Al-Allaf, 74, and passing cyclist Sylvain Mollier were killed in the gun attack.
BBC: Alps al-Hilli family murders: Man charged in fraud inquiry
The company was recently bought by defence giant EADS, which has raised questions among conspiracy theorists that Saad al-Hilli's murder was work-related.
BBC: French Alps murders: Victim had money worries over home
It also remains unclear whether the Hilli family were the intended targets.
Saad al-Hilli and his wife Iqbal from Claygate, Surrey, her mother Suhaila al-Allaf and French cyclist Sylvain Mollier were shot on 5 September.
Surrey Police could not confirm whether the accounts belonged to Mr al-Hilli himself and stressed the fraud charges were not linked to the murder investigation.
BBC: Alps al-Hilli family murders: Man charged in fraud inquiry
Saad al-Hilli, 50, from Claygate in Surrey, was shot dead along with his wife, mother-in-law and a cyclist near Chevaline, Lake Annecy, on 5 September.
BBC: Alps al-Hilli family murders: Man charged in fraud inquiry
Mr al-Hilli's wife, Iqbal, and her 74-year-old mother who held a Swedish passport, were killed, close to the tourist destination of Lake Annecy, on Wednesday.
It remains unclear whether the Hilli family were the intended targets.
BBC: French Alps murders: Uncle's concerns over police probe
Mr Perkins added Mr al-Hilli would "be greatly missed and our thoughts are with his family and loved ones at this very difficult and traumatic time".
Its envoy, Ahmed ben Hilli, annoyed friends of the ousted president by suggesting that he had been reassured by General Abdelaziz's promise to hold new elections in due course.
The family - including Mr al-Hilli's dentist wife Iqbal, 47, and her mother, were murdered in their car while on holiday near Chevaline, close to the tourist destination of Lake Annecy.
In panic, Mr Hilli reversed the car into a bank of earth surrounding the remote car park above the hamlet of Chevaline, the report suggests, trapping the back axle and preventing his escape.
"I am deeply shocked and saddened to confirm that one of SSTL's long-term contractors, Saad Al-Hilli, has been formally identified as one of the victims of the shootings which occurred in the French Alps, " he said.
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