The families of teenagers Bianca Jones and Holly Bowles have been "blown away" by the support of the public after their fundraising goal was surpassed overnight.

Laos police have detained eight staff and managers of the hostel where Australians Bianca Jones and Holly Bowles were staying when they fell ill. A third Australian is also recovering from suspected poisoning.

Sunrise host Nat Barr struggled to hold back the tears on Wednesday, as she watched the brave fathers of Bianca Jones and Holly Bowles arrive back in Melbourne. It was confirmed overnight that the bodies of Jones and Bowles were flown back to Australia after their deaths of methanol poisoning last week.