Marwan Abdel Karim Ali Issa was a Palestinian militant who was the deputy commander of Hamas' military wing, the Al-Qassam Brigades.
Issa was born in the Bureij refugee camp in the Gaza Strip in 1965. He was educated at the Islamic University of Gaza, and played basketball for Al-Bureij Services Club. He was arrested in 1987 during the First intifada for his involvement with Hamas. He was detained by the Palestinian Authority from 1997 to 2000, and released after the outbreak of the Second Intifada.
