From Times of Israel:
The Israel Fire and Rescue Service on Sunday said it suspects arson as the cause of a fire that broke out on Thursday at Ben Shemen Forest and burned down almost the entire adjacent community of Mevo Modi’im in central Israel.And:
Fueled by the scorching weather, more than a thousand fires devastated towns and forests across the country from Thursday to Saturday, forcing thousands of people out of their homes.
After an investigation into the Mevo Modiim blaze, the fire service determined it was sparked in several different spots, raising suspicion of arson.
Fires broke out Sunday evening in a wooded area between the Jewish neighborhood of Pisgat Zeev and the Shuafat Palestinian refugee camp in East Jerusalem, Israel Police said in a statement.
Hebrew media reported that the fires, in a valley alongside Eliyahu Meridor Street, were caused by Molotov cocktails.
An additional Molotov cocktail was thrown at firefighters as they battled to prevent the flames, the Kan public broadcaster reported.
There is a long history of Arab terrorist fires (both forest fires and against factories and residences) in Israel that pre-dates 1948.
July 24, 1939:
In September 1945, a JNF official wrote an article that touched on the constant arson the organization had to fight: