After the six-days war (name in the occidental world),also named as "disaster war" or "war of June" in somes of the Arabs countries; The Sinaï desert became, de facto,in 1967, Israeli territory.
The authorities of Israel began to build a new city, closely to Gaza strip, Yamit.
According to the peace treaty between Egypt and Israel, all the Sinaï desert came back to the Egypt authorities in 1982.
there´s few neutral information about this former city on the Net. here is the Wikipedia link:
P.S.: Ariel Sharon was the highest military authority in charge to organise the evacuation of the citizens of Yamit.