Police said enquiries are continuing into the attack, which took place in Glasgow on Friday.
Officers from the North Ayrshire priority policing team said it was an 'unprecedented time'.
A search was launched after the 12-year-old disappeared from Paisley.
A 37-year-old woman suffered serious injuries following an incident last Friday.
Police launched an investigation following numerous reports from members of the public, retail and hotel staff in Aberdeen.
Gary Gray, 46, died within a house in Wishaw, North Lanarkshire, on Tuesday morning.
Members of the public are being advised not to approach Steven Ross but to contact police immediately.
Police said there was no immediate suggestion that the circumstances were suspicious.
The 68-year-old woman was badly hurt trying to prise her dog away.
Melita Hachey, 30, was last seen in Livingstone Place, Galashiels, last Friday afternoon.
Police said the item was found by a member of the public in Aberdeen on Thursday evening.
The 19-year-old man was attacked in Edinburgh at around 5.50pm on Tuesday.
Abbey Rogan was last seen leaving an address in Kirkcaldy at around 9.45pm on Tuesday.
The 40-year-old male staff member was uninjured, but was left 'in a state of shock'.
The public health approach comes as UK and Scottish governments prepare to host drug summits.
The driver of the vehicle has been taken to hospital following the smash on Monday.
The 37-year-old man was pronounced dead at the scene.
A 36-year-old woman has been taken to hospital in Glasgow after a crash on the A907 near Stirling.
Smoke could be seen billowing from the vehicle near Harthill Services, causing a black cloud to cover the motorway.
MSPs welcome Police Scotland's U-turn on plans to use live facial recognition software.