The report has statements from seven civilian witnesses and 11 police officers, plus 911 calls and police radio transmissions.

The day’s hottest temperature belonged to Lytton, where a new high of 41.2 C was recorded, easily eclipsing the old mark of 40.4 that was set in 2008.

Environment Canada says a ridge of high pressure is building over Southern B.C., leading to soaring temperatures.

It was certainly hot across the province on Wednesday, and the record-setting heat is expected to continue Thursday.

Anyone who witnessed the incident is asked to contact the IIO at 1-855-446-8477.

The most severe temperatures are forecast for the Fraser Canyon area, including Lillooet and Lytton, where the mercury is forecast to hit 36 C.

One fire is located northeast of Merritt, the other is near Lytton.

More sunshine is forecast this weekend for most of the province.

Environment Canada is urging people to be aware of the risks from hot weather.

Simon Fraser once described the Lytton area by saying he "had to pass where no human being should venture."