The English announcement says:
Ezzedeen Al Qassam Brigades (E.Q.B) the military wing of the Islamic resistance movement Hamas, mourned on Friday, March 29th, 2014, the death of the Qassam member Hamza Ayman Abu Eid (20), from Al Qarara city – South of Gaza Strip.
The brigades confirmed in a press statement released on Friday morning, that the martyr Abu Eid has died accidently [sic]while cleaning hi [sic] weapon, adding that he was martyred after a long bright path of Jihad, hard work, struggle and sacrifice
Al Qassam Brigades mourn the death of the mujahed, reaffirms the commitment and determination to continue the resistance against the belligerent occupation forces.
According to reports, he shot himself in the head.
It is remarkable that for all the "ethnic cleansing" Israel is supposedly engaged in, terrorists in Gaza manage to kill more of each other and their fellow citizens than the IDF does.
By my count, about 12 people - mostly terrorists - have been killed in Gaza so far this year from "work accidents" and rockets falling short.