Pro-Palestinian activists wave Palestinian flags during the welcoming ceremony for cruise liner Mavi Marmara at the Sarayburnu port of Istanbul December 26, 2010. Nine Turkish activists died in May when Israeli commandos raided the boat, which was part of
Pro-Palestinian activists wave Palestinian flags during the welcoming ceremony for cruise liner Mavi Marmara at the Sarayburnu port of Istanbul December 26, 2010. Nine Turkish activists died in May when Israeli commandos raided the boat, which was part of a flotilla seeking to break the blockade imposed on the Gaza Strip. The Hagia Sophia is seen in the background.

Israeli army sources told the Jerusalem Post on Monday night that new intelligence information obtained in recent days shows that participants of the flotilla planning to break Israel's sea blockade over the Gaza Strip later this week plan to kill Israeli Defence Forces soldiers who board their ships.

The sources told the newspaper that some of the participants have prepared sacks with sulfur, which they plan to pour on the soldiers as they board the vessels.

"This is a chemical weapon, and if poured on a soldier it can paralyze him," an IDF source told The Jerusalem Post Monday night. "If the sulfur is then lit on fire, the soldier will light up like a torch."

The information was obtained from closed meetings held by participants on the ships during which some voiced their intention to "murder Israeli soldiers," according to the IDF.

In response to the IDF's statements, Dror Feiler, an Israeli participant on the upcoming flotilla, told Army Radio that the claims "are an attempt to justify in advance IDF violence."

Feiler said that as long as it is up to flotilla organizers, activists planning to harm IDF soldiers will not participate in the mission.

"If Israel suspects any one, it should provide us with information so we can stop him. Violent people are not permitted to take part in the flotilla," he said.

"All of the passengers signed a pledge of non-violence, because we don't want a repeat of what happened in the last flotilla," Feiler stressed. "We have no intention of confronting anyone. We just want to arrive in Gaza in peace. Israel has no reason to stop the flotilla."

"The situation in Israel, with its army and security forces fighting a group of 20 organizations, is funny. The world does not believe it, and neither does the State of Israel itself," he said.

Army officials also said they had begun the final preparations to stop the vessels, and added they "will be prepared for a wide-range of scenarios from no violence at all to extreme and violent resistance from the passengers."

Most of the people taking part on the flotilla however are just human rights activists which primordial aim is to access Gaza and not launch an attack on the Israeli army. The new revelations by the Jerusalem post sound more like an anti-flotilla propaganda than a serious security breach report.