Police fear that a second suicide bomber may be hiding in Dimona. At 10:30, a suicide bomber set off a blast at the old commercial center in Dimona and killed four people. It is not known if the bomber was among the dead, and initial reports indicated he was among three people critically wounded.

Police said there was no specific warning of an attack in the Negev delopement city, but Voice of Israel government radio reported there have been specific warnings of a terrorist attack in the Negev.

Security officials raised a security alert last week after the destruction of the barrier at the Rafiah border, which allowed terrorists free passage to Egypt, where they have been trying to infiltrate into Israel.