Police said the body was badly decomposed and had 'clearly been in the water for some considerable time'.
The victim was knocked to the ground in the assault and had to be taken to hospital.
The 12-year-old was accosted while walking along Station Road West in Aberdeen on Tuesday afternoon.
Jasmine Herron, 19, and father-of-three Jonathan Graham, 37, died in the road crash in Argyll.
Siobhan Malley, 31, has been missing from Renfrewshire since Tuesday.
The robbery took place in East Ayrshire at around 8.15pm on Wednesday.
Jonathan Cameron, 25, was struck near Buccaneer Service Station on the A941 north of Elgin on Saturday.
The man was struck near Buccaneer Service Station on the A941 north of Elgin at around 6.20am on Saturday.
The serious crash happened in Aberdeen on Sunday evening.
When officers arrived at the crash site in Midlothian, no one was in the car.