The men were taken to hospital following the blast at a property in Dingwall.
Jasmine Herron, 19, and father-of-three Jonathan Graham, 37, died in the road crash in Argyll.
Margaret Grant, 79, died in hospital following a disturbance at her home in Edinburgh on Friday evening.
On Saturday, Police Scotland’s Air Support Unit deployed drones to aid with the Stefan Sutherland investigation.
Police Scotland said it would offer Gary Webb an unreserved apology.
The man was struck near Buccaneer Service Station on the A941 north of Elgin at around 6.20am on Saturday.
The marked car he was driving was involved in a smash with another car
The body of Stefan Sutherland was found on the Caithness shoreline six years ago.
The 28-year-old man’s body was pulled from the River Forth on Sunday night.
The collision happened in York Place, Edinburgh, at around 7.45am on Monday.
Police have said the incident at the Fort Shopping Centre in Glasgow is being treated as wilful.
Officers investigating a firearms incident say a purple Nissan Pulsar may have been used by the perpetrators.
Helen Reid had been missing from her home in Aviemore.
A Ford Transit van failed to stop for police in Ferry Road, Leith, around 5.20pm on Thursday.
A 22-year-old man was seriously assaulted by the pair around 9.15pm in Hamilton on Tuesday.
Darren Brownlie, 47, died at HMP Low Moss in East Dunbartonshire on Monday.
Emergency services attended the incident on Cousland Road, Livingston, around 3.20pm on Wednesday.
Officers following routine enquiries in Glasgow discovered the cultivation on Monday,
A stretch of the A1 in East Lothian was closed to all vehicles from 5am on Tuesday.
Police searched St Mungo's High School on Monday after the correspondence was reported by staff.