At approximately 09:40, an Israeli warplane fired a missile at a group of Palestinian civilians near Abdullah Bin Rawaha Mosque in Maan area in the east of Khan Yunis. 2 civilians were killed: Abdullah Harb Salem Abu Khater, 21; and Mahmoud Saeed Abu Khater, 34.
The PalDF Hamas forum refers to Mahmoud Saeed Abu Khater, whose day job was apparently as a teacher, as a "mujahid."
His brother, Abdullah, was a member of Hamas as well:
It looks like they were not innocent civilians just standing around, but specific targets because of their terror ties.