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'Four killed' in Gaza explosion Five die in Gaza City explosion
(about 3 hours later)
A powerful explosion by a beach in the Gaza Strip has killed at least three Palestinians, including a young girl, Hamas officials and medics say. A powerful explosion inside a car travelling past a beach in the Gaza Strip has killed four Hamas militants and a young girl, medics have said.
At least 20 people were reportedly injured by the blast, which destroyed a car close to the coast in Gaza City. At least 20 other people, including many enjoying a day by the sea, were said to be injured by the explosion on Gaza City's coast road.
Reports said the blast was the third in Gaza on Friday. Violence in the area has fallen since the militant group Hamas seized power in Gaza in 2007. Leaders of the Islamist movement have blamed Israeli collaborators in Gaza.
Unconfirmed reports said the men killed were Hamas fighters. It was the third bomb attack in a day - one of the bloodiest since Hamas and Israel agreed a ceasefire last month.
The series of bombings amounted to one of the most serious outbreaks of deadly violence since Hamas took power. 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.
Mysterious blasts
Earlier on Friday, a bombing outside a cafe in Gaza City killed one person and injured four others, Palestinian police reported.
There have been a number of attacks on cafes in the Gaza StripThe blast, just after midnight local time, caused extensive damage.
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.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.
Police also reported a bombing near the home of Marwan Abu Ras, a Hamas official who issues fatwas, or religious edicts, in Gaza. No-one was injured. Officials also reported a bombing near the home of Marwan Abu Ras, a Hamas politician and academic. No-one was injured.
The militant Hamas movement seized control of Gaza by force more than a year ago from the Fatah movement of Mahmoud Abbas, the president of the Palestinian Authority. 'Fugitive party'
The explosion on Friday night at a major junction besides Gaza City's beach killed a commander of Hamas' military wing, the Izzedine al-Qassam Brigades, and three other members, hospital officials said.
The five-year-old girl killed in the blast had been on her way to the beach with her family, they added.
We have information that some elements are planning to carry out bombings against the interests and leaders of Hamas in order to sow anarchy Khalil al-HayyaHamas leader
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.
Since then, Hamas's forces have arrested many Fatah supporters.
Most have been afraid to challenge the Islamist movement and so while there has been dissent, factional killings have decreased considerably, our correspondent says.
In response to this latest internal violence, Hamas immediately set up checkpoints throughout Gaza City.