Hamas terrorists in Gaza
Hamas terrorists in Gaza Abed Rahim Khatib/Flash 90

A suicide bomber killed a Hamas guard in southern Gaza on Thursday, officials said, in what was
seen as a rare Islamist attack against the terror group which has run the terror enclave for a decade.

The incident occurred at around 1:00a.m. near the Gaza's border crossing with Egypt along the Sinai Peninsula, where radical Islamists are fighting Egyptian forces.

It would be the first time a suicide attack has targeted Hamas forces in Gaza, security sources said.

"Early this morning security forces stopped two people approaching the southern border (with Egypt)," a Hamas Interior Ministry spokesman said in a statement. "One of them blew himself up."

Interior Ministry spokesman Iyad al-Bozum later referred to it as a suicide attack.

Hamas's military wing, the Ezzedine al-Qassam Brigades, said field commander Nidal al-Jaafari, 28, was killed in the attack.

Qassam posted a series of photos of Jaafari in military fatigues carrying different weapons.

The group blamed "fundamentalist jihadists" for the attack, but further details on their backgrounds and motivations were still being investigated.

Security sources said the attack took place a few hundred meters from the Rafah crossing with Egypt.

The two men approached a small security position there and five guards tried to stop them before one blew himself up, security forces said. They added that the second man was moderately wounded, while the four other guards were also wounded, including one seriously.

Eyewitnesses said hundreds of security forces deployed along the border after the explosion.

Though Hamas governs Gaza, many Gazan citizens are unhappy with their leadership. Hamas leaders are known to enjoy 24/7 electricity at civilians' expense, use international aid money for terror tunnels and rockets, and argue with the Palestinian Authority's Fatah party enough to make the PA refuse to allow sick Gazans to enter Israel for medical treatment.

Recently, opposition groups have threatened to retaliate against Hamas, Gazan security sources said.

Hamas has recently boosted its forces along the border with Egypt as it seeks to improve relations with Cairo.

Some security sources questioned whether Thursday's explosion was a new phase of the opposition's campaign.

The groups claim thousands of supporters out of Gaza's two million people, while Hamas estimates there are dozens.