Israel mourns death of missing teenagers
Gaza death toll climbs to 74
Medical officials said at least 60 civilians, including a girl and boy, were killed in strikes.
Israel pressed on with a punishing aerial offensive in Gaza for a third day on Thursday.
Benjamin Netanyahu’s security cabinet decided to step up air strikes in Gaza.
Israel’s Shin Bet security agency said the suspects were being questioned at one of its installations.
Hamas said six of its members were killed in air strikes in Rafah.
Israel is braced for violent protests by Palestinians in Jerusalem and the occupied West Bank.
The deployment is a response to persistent Palestinian cross-border rocket attacks.
The Israeli PM urged police to swiftly investigate the loathsome murder.