sentences:  A judiciary spokesman said they had not been arrested but that they were summoned, "warned not to increase tension," and later released.Intelligence minister Gholam Hossein Mohseni-Ejehei linked some arrests to terrorism supported from outside Iran, stating that "more than 20 explosive consignments were discovered".Others, he said, were "counter-revolutionary groups" who had "penetrated election headquarters" of the election candidates.