Internet hackers briefly took over an Israeli army Twitter account, the military said Friday, posting an alarming message that a nuclear facility had been hit by rocket fire. #WARNING: Possible nuclear leak in the region after 2 rockets hit Dimona nuclear facility in the south of the country, it read. Internet hacking group the Syrian Electronic Army claimed responsibility, posting a screen shot of the armys Twitter page with at least two of its fake tweets. The hacking came as Israels army gave regular updates on rocket fire from Gaza hitting southern Israel, after a brief uptick in the past week in cross-border exchanges, including retaliatory air strikes by Israel.