we have developments. here is what s going on. a ten-day national state of emergency is in place in mali. it was declared following friday s deadly siege at a luxury hotel in the west african nation. heavily armed gunmen opened fire on guests. at least 21 died. an islamist militant group is claiming joint responsibility with an al qaeda affiliate. we re getting reports that turkey has detained a belgian citizen believed to have scouted sites for the paris attacks. cnn turk identifies him as 26-year-old ahmet domani. he was arrested in southern turkey. he is of moroccan descent. cnn turk also reports that two syrian nationals were arrested. they are accused of trying to transporting the first man into syria. now belgium. all underground stations in brussels are closed today according to the public transportation authority there. belgium s capital is under the highest terror threat level