Jenin District Governor Kadura Musa, 60, died Tuesday of a heart attack shortly after gunmen opened fire on him at his home, Maan News reported Wednesday.

The attack may have been in retaliation for the killing of Amthal Ghawadara by Palestinian police on April 15. Ghawadara was from the Deir al-Basha village in the northern Jenin district.

The gunmen had reportedly staked out Musa’s house before beginning to fire. His bodyguards fired back at the assailants.

The gunmen are believed to be family members of Ghawadara, according to Haaretz. The family had threatened to take revenge, and family members had fired at the local police station several times.

Musa, who was known for having close ties with Israel, was one of the figures who helped stabilize the security situation in Jenin, the paper said.

He was one of the founders of Fatah, the political movement of Palestinian Authority President Mahmoud Abbas, in Jenin. He was jailed by Israel during the 1990s for his affiliation with Fatah and for terror activities during the first intifada.