During a Twitter town hall, Secretary of State John Kerry said it was too soon to say whether all or some of the girls kidnapped by the Boko Haram terrorist group in Nigeria would be found.

. @AnnCurry Too early to conclude. Team arriving. Very difficult situation. Determined to do everything we can to help.

- John Kerry (@JohnKerry) May 9, 2014

Kerry was answering a question from NBC's Ann Curry.

. @JohnKerry @StateDept Do you have any confidence all or some of the girls can be found? #YALICHAT @YALINetwork #BringBackOurGirls

- Ann Curry (@AnnCurry) May 9, 2014

Asked by user @JulianaOdedeyi what the U.S. government is doing to help stop Boko Haram, Kerry responded: "Sent team of law enforcement, intelligence & military experts. Will use sophisticated counter-terrorism efforts to assist."

A small team of six military experts from U.S. Africa Command and one State Department official arrived in Nigeria today.