内容摘要：It remains unclear if Saudi authorities are even willing to release the compensation, let alone adjust it for inflation as some family members now demand - with some claiming it could be worth over $1bn today.

It remains unclear if Saudi authorities are even willing to release the compensation, let alone adjust it for inflation as some family members now demand - with some claiming it could be worth over $1bn today.

The girls, Paityn, Evelyn and Olivia, died from apparent suffocation in a remote campground, earlier this week, according to police.Their mother reported them missing on 30 May after Mr Decker failed to return his daughters to her following a visit. He also did not take her phone calls.

A few days later, on 2 June, police found the girls' bodies near a campground.Police also found Mr Decker's cell phone at the campground but he was no longer there. His truck, which he was believed to have been living in, was also found nearby."I don't think any motive would be acceptable. And clearly it's not the decision of a sound mind," Chelan County Sheriff Mike Morrison said at a press conference on Wednesday, where he made a public plea to Mr Decker to turn himself in.

Mr Decker's outdoor survival skills may be helping him evade the authorities searching for him, which includes the FBI, Sheriff Morrison said."It sounds like at times he would go out and would be off-grid for sometimes up to two and a half months," Sheriff Morrison said after speaking with Mr Decker's family.

Mr Decker may have scoped out the area and hidden supplies there before allegedly killing his children, and he has "the knowledge to survive for a long period of time," the sheriff added.

"We want a peaceful resolution to this, but we're not going to relinquish our efforts," Sheriff Morrison said in asking Mr Decker to come forward. "Let's wrap this up and do what's right for your kids."A Lancashire Police spokesperson apologised for the lost interview disc in her case, and said, since 2015, it had introduced new processes to prevent similar issues happening again.

Responding to the BBC's findings, Katie Kempen, chief executive at independent charity Victim Support, said: "Police forces must ensure crimes are thoroughly investigated and evidence is handled appropriately and sensitively."All victim-survivors deserve the opportunity to seek justice."

Former police officers have told the BBC they are not surprised by the findings."It's [evidence] chucked all over the place," said one former officer.