Anti-Sharon graffiti was found scribbled in the woman's bathroom outside the Knesset plenum last Monday, November 7.
Among the things written were, "Evacuation criminals to trial," and "We killed Rabin, we will kill Sharon too."
According to Army Radio, two girls, aged 12 and 14, are the main suspects in the incident and have been arrested.
The two had attended a Knesset Judiciary Committee meeting 10 days ago because they were jailed for more than a month following disturbances that they caused during the disengagement from Gaza.
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