expected handover of a second group of hostages held by hamas. sources tell cnn a dispute emerged over the amount of aid being delivered into gaza and a selection of palestinian prisoners being released by israel. israel says it expects as many as 13 hostages to be released today. several of them are believed to be children. a u.s. official says american citizens are not expected to be among those released today. as part of the deal, israel says they will release 39 mipalestinn prisoners. this marked day two of a temporary four-day truce between the two sides. wolf. thank you very much. cnn has eyes and ears on the ground covering all the late-breaking developments in this hostage exchange. i want to go to jeremy diamond, joining us from the border crossing in israel not far from gaza and egypt. jeremy, give us an update on today s expected release. reporter: by this time yesterday the 24 hostages released by hamas were well on their way to an air base in israel and then