Despite the widespread discomfort in Israel over the release of the women, protests were limited to a few dozen right-wing militants.
Because of this, the general strike was moved to May 18, but it was suppressed by the police and the right-wing militants.
It said the information was provided by an informer who infiltrated a group of right-wing militants.
Some right-wing militants were upset about the naval agreement that he signed.
In other developments, Israel Radio reported that at least 24 people known to be right-wing militants had been rounded up by the police on various charges.
They have remained despite attempts by local white farmers and right-wing militants to remove them.
To counter the threat, the federal intelligence service in Cologne has tripled the size of the department responsible for keeping right-wing militants under surveillance.
Homeland security officials say their planning document was not intended to be inclusive and that right-wing militants will never be neglected.
In the past, the right-wing militants have used conventional explosives like those handled by white miners blasting in the gold mines.
A moderate nationalist, Goulart was accused of being a communist by right-wing militants, and was unable to take office.