<p>The explosions appeared to be revenge attacks against Gaza's rulers, the Islamic militant group Hamas.<br />Officials said they defused two more bombs hidden in the Ansar compound in Gaza City. They spoke on condition of anonymity because they were not allowed to speak to reporters.<br /><br />There were no immediate claims of responsibility. However, a shadowy group loyal to al-Qaida called Jund Ansar Allah -- Soldiers of the Companions of God -- has sworn to attack Hamas security compounds and mosques in retaliation for a deadly shootout earlier this month.<br /><br />Twenty-eight people died a gunbattle between Hamas police and the group that took place in and around a mosque in the southern Gaza Strip town of Rafah two weeks ago. The battle began after the group's spiritual father announced he would establish an Islamic emirate in Gaza.<br /><br />Hamas interior ministry spokesman Ihab Ghussein said they were investigating the explosions.<br />Also today, an Israeli aircraft bombed a tunnel in the northern Gaza Strip that military officials said could be used by militants to infiltrate Israel.<br />A military spokeswoman said the tunnel was being dug about a mile from Gaza's border with Israel by organisations not connected to Hamas.</p>
<p>The explosions appeared to be revenge attacks against Gaza's rulers, the Islamic militant group Hamas.<br />Officials said they defused two more bombs hidden in the Ansar compound in Gaza City. They spoke on condition of anonymity because they were not allowed to speak to reporters.<br /><br />There were no immediate claims of responsibility. However, a shadowy group loyal to al-Qaida called Jund Ansar Allah -- Soldiers of the Companions of God -- has sworn to attack Hamas security compounds and mosques in retaliation for a deadly shootout earlier this month.<br /><br />Twenty-eight people died a gunbattle between Hamas police and the group that took place in and around a mosque in the southern Gaza Strip town of Rafah two weeks ago. The battle began after the group's spiritual father announced he would establish an Islamic emirate in Gaza.<br /><br />Hamas interior ministry spokesman Ihab Ghussein said they were investigating the explosions.<br />Also today, an Israeli aircraft bombed a tunnel in the northern Gaza Strip that military officials said could be used by militants to infiltrate Israel.<br />A military spokeswoman said the tunnel was being dug about a mile from Gaza's border with Israel by organisations not connected to Hamas.</p>