The former head of Israel’s naval Special Operations unit has died while on vacation in Thailand.

Gadi Shefi,76, died of an apparent heart attack in a hotel room in Pattaya, where he was found over the weekend. He had been missing for a week before his son announced his death Tuesday on Facebook.

At this hard and painful time, we want to thank everyone for the help in finding our father,” Ari Shefi wrote.

Israel’s Foreign Ministry said it is assisting the family in bringing Shefi’s body to Israel.