It appears that the PA, which is not friendly with Hamas, is trying to get an problem to occur between Hamas and Israel.
Hamas already has problems with Israel... this is a power play by Abbas... he sees it as a win-win, squeeze Hamas and blame it on the Jews. He is trying to extract something from Hamas (who rule Gaza)... power in some form or another, I’m just not familiar enough with politics there to know what his endgame is (other than the destruction of Israel, of course).