A member of Hamas' military wing was killed Tuesday morning and two others were severely injured in an explosion which took place east of Gaza City, the Palestinian news agency Maan reported.
The man was hurt by shrapnel in all parts of his body.
Hamas' military wing, the Izz al-Din al-Qassam Brigades, declared that the man, 24-year-old Halil Ibrahim Jundiah, was killed "while on a special jihad mission."
Two weeks ago, two Palestinians were killed and two were injured in a blast at a Hamas training base near the southern Gaza Strip town of Khan Younis. A source in the Strip said that a facility in the base collapsed following the explosion. The IDF said the incident was a "work incident".
The Israeli army has not launched offensives in Gaza ever since the truce agreement in Gaza went into effect, despite violations of the ceasefire several weeks ago.
More than a month ago, a mysterious explosion in a building in Beit Lahiya left four people dead, including a baby and a child, and dozens injured. The Palestinians claimed the incident was an Israel Air Force strike, but the IDF denied operating in the area and estimated that the blast was the result of a "work accident".