HAMAS ARREST DOZENS AFTER BLAST !

Hamas security forces in the Gaza Strip have arrested dozens of Fatah supporters and set up checkpoints after an explosion killed six people.
A powerful explosion inside a car travelling past a beach in the Gaza Strip on Friday killed five Hamas activists and a six-year old girl.
At least 15 other people were said to have been injured by the explosion.
It was the third bomb attack in a day - one of the bloodiest since Hamas and Israel agreed a ceasefire last month.
Earlier on Friday, a bombing outside a cafe in Gaza City killed one person - reportedly the perpetrator - and injured at least three others, Hamas officials said.
It was unclear why the area was bombed, but there have been attacks on internet cafes, music shops and Christian institutions in Gaza in recent months.
Officials also reported a bombing near the home of Marwan Abu Ras, a Hamas politician and academic. No-one was injured.

The explosion on Friday night at a major junction besides Gaza City's beach killed three Hamas members and the girl immediately, according to a statement by the Palestinian Health Ministry.
Two more Hamas members died of injuries on Saturday, the statement added.
The girl killed in the blast had been on her way to the beach with her family, medics said.
Afterwards, Hamas did not explicitly accuse its bitter rival, Fatah, of carrying out the attack, but it did imply it, the BBC's Aleem Maqbool says.
Khalil al-Hayya, a Hamas leader whose son was wounded in the blast, blamed Palestinian groups "who collaborate with the enemy [Israel]".
"We have information that some elements are planning to carry out bombings against the interests and leaders of Hamas in order to sow anarchy," he told the Reuters news agency.

The Izzedine al-Qassam Brigades, however, were more explicit and blamed "members of the fugitive party" - a derogatory term for Fatah.
Hamas seized control of the Gaza Strip in June 2007 from the Fatah movement of Palestinian Authority President Mahmoud Abbas.
Most have been afraid to challenge the Islamist movement and so while there has been dissent, factional killings have decreased considerably, our correspondent says.

bbc news report.