GAZA CITY -- Gaza's Health Ministry said four Palestinians were killed and several others injured Saturday in a mysterious blast in the southeast part of the Gaza Strip.
The explosion struck a three-wheeled vehicle near one of the five protest camps the Palestinians have set up along the volatile Gaza-Israel border in recent weeks.
The reason for the explosion near the city of Rafah was not immediately known. The Israeli military said it was unaware of any activity in the area of the blast.
Local reports said those who died Saturday were Islamic Jihad militants.