Palestinians at the Gaza border flew a kite marked with a swastika and carrying a petrol bomb into Israel on Friday.

The Israeli army posted photographs of the kite in the air and on the ground inside Israel.

An IDF spokesman, Jonathan Conricus, wrote: “Moments ago, terrorist Hamas sent a Molotov cocktail over the Gaza border into Israel. They flew it with their true colors.”

April 20 was Nazi leader Adolf Hitler’s birthday.

Friday marked the fourth weekend in succession that thousands of Palestinians have demonstrated at the border, in mass protests encouraged by the Gaza Strip’s Hamas rulers. Originally declared as non-violent “March of Return” protests, the demonstrations are being encouraged by Hamas, which seeks to destroy Israel, and whose leaders say the goal of the protests is to erase the border and liberate Palestine.

The Israeli army says it has faced “terror” at the fence during the weekly protests, including a shooting incident, numerous efforts to breach the fence, stone- and bomb-throwing. In recent days, Gazans have flown kites carrying petrol bombs across the border, and these have caused fires several times in Israeli fields close to the border.

On Tuesday, one such kite started a fire in a grassy grove outside Kibbutz Be’eri, an Israeli community located some seven kilometers (4.3 miles) east of Gaza’s Bureij refugee camp. It took four teams of firefighters to bring the blaze under control, a spokesman for the local fire department said. The Kan news broadcaster reported that the fire had spread over almost 100 dunams (25 acres).

Gazans filmed the kite crossing the border and starting the blaze, in a video shared on social media.