The Palestine Press Agency (Arabic) is reporting that Hamas has decided to start "taking inventory" of the land and other property that belonged to Fatah members who had to flee for their lives during the Hamas coup, as a first step to formally seizing them.
Hamas has already taken over many PA-run organizations and offices in Gaza, such as the court system and finance offices.
Apparently, taking land is not considered "ethnic cleansing" when Arabs do it to other Arabs.