"We have shared commercial satellite imagery with the Nigerians and are flying manned ISR (intelligence, surveillance and reconnaissance) assets over Nigeria with the government's permission," the US official said.
State Department spokeswoman Jen Psaki told a news briefing on Monday that the US was providing intelligence, surveillance and reconnassance support. She said US teams on the ground "are digging in on the search and coordinating closely with the Nigerian government as well as international partners and allies." Two US officials, speaking on condition of anonymity, said the United States was also considering deploying unmanned, drone aircraft to aid the search.Read: Nigeria: Fresh Boko Haram massacre kills hundreds
Nigerian President Goodluck Jonathan has said he believes the girls are still in Nigeria. The leader of Boko Haram has offered to release them in exchange for members of its group being detained, according to a video posted on YouTube on Monday.Read moreBoko Haram smearing Islam: S Arabia's top cleric
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