Given a text, write a compressed version of it in a single sentence.

Israeli security officials believed that the murdered real-estate dealer was executed by plainclothes Palestinian Authority police. The Palestinian Authority's decision to make the sale of land to Jews a capital crime reflects Palestinian frustration with Israeli land use, specifically the creation of a new Jewish neighborhood now under construction in East Jerusalem.
Israeli security officials believed the murdered dealer was killed by Palestinian police. Their decision to make selling the land to Jews a capital crime makes their frustration with the creation of a Jewish neighborhood in East Jerusalem