Secret Location of Israeli Music Festival May Have Been Exposed in Facebook Hack Before Hamas Massacre: Report

The location in southern Israel for the rave where Hamas gunmen killed nearly 300 revelers Saturday morning was not publicized, leading investigators to suspect the terrorist group hacked the social media accounts of the event's organizers.

Israel's General Security Service is now investigating the possible cyber intrusions into the devices or accounts of the people who planned Saturday's festival, according to Israel's Channel 12.

The party, promoted as a "journey of unity and love," drew a crowd of 3,500 people. Hamas ambushed the event just after dawn as it unfolded in an outdoor space less than four miles from Gaza. Hamas soldiers took several hostages from the festival back over the border as they shot others.

One of the organizers of the all-night rave, staged between two kibbutzes, told Channel 12 he had a feeling his Facebook account had been compromised last month, but never imagined it could be terrorists planning an assault.

"Hamas must have hacked my Facebook," the party organizer said. "I've been complaining to all my relatives for something like a month that I feel like I'm being followed and my phone was hacked."

After the massacre, which claimed the life of at least one American, he notified authorities and investigators with Israel's internal security service, Shin Bet, seized his phone.

The report claims that the invitations to the rave did not provide a location. Instead, a WhatsApp message was sent to those with tickets shortly beforehand telling partygoers where to go.

Investigators are now trying to piece together how the Hamas gunmen — about 50, who arrived by van and on hang-gliders — could have known where to attack.