The Algerian fire are said to be mostly arson. So, they suspect that someone, or some people have started the fires. But, I would say that this might be a denial of truth. I mean, if we look at all the fires going on, and the record temps happening. It makes one wonder if it is a natural disaster due to climate change, or very mentally disturbed people. No way to  know. 

But These fires are reported to be pretty bad, and have killed some people already.

Here is the link to the article:

https://www.bbc.com/news/world-africa-58174918

Global weather issues