Complex sentence: The three attackers were Arab Israeli citizens from Umm al-Fahm, Mohammed Ahmed Mafdal Jabrin and Mohammed Hamed Abed Eltif Jabrin, both of whom were 19 years old, and 29 year old Mohammed Ahmed Mohammed Jabrin.
Split into simpler sentences: The three attackers were Arab Israeli citizens from the city of Umm al-Fahm. They were identifed as Mohammed Ahmed Mafdal Jabrin and Mohammed Hamed Abed Eltif Jabrin, both of whom were 19 years old, as well as 29 year old Mohammed Ahmed Mohammed Jabrin.