Well, according to this news item at Ma'an,
Four Hamas members were injured on Friday morning by an accidental explosion at one of the group's military training sites west of the city of Khan Younis in the southern Gaza Strip.
Spokesperson for the Gaza Ministry of Health Ashraf al-Qidra told Ma'an that the four individuals were taken to hospitals in the southern Gaza Strip for treatment.
You did catch that?
military training sites
Next, they'll be calling them terrorists.