Haaretz story, here.

Key quotes:

The gunman who murdered eight students at Mercaz Harav Yeshiva in Jerusalem last Thursday was acting on instructions from Hamas leaders in Damascus, in coordination with Hezbollah, Palestinian defense sources said.

Over the weekend, eight East Jerusalem residents were arrested in connection with gunman Ala Abu Dhaim's shooting attack. Abu Dhaim's father, two of his brothers and two cousins are among those detained.

The father also removed Hamas and Hezbollah flags from a mourners' tent the family had erected, after being instructed to do so by police. According to the Palestinian news agency Maan, Abu Dhaim's father had in the past been a member of Hamas.

Now you'll probably hear that the collaborationist PA sources are almost as bad as Israel itself in their bias against poor Hamas, or about factions inside the organization. What nobody will be able to explain to you is why you need to take Mashaal seriously when such factions exist.

I still can't believe this freaking video is posted here.