>> jeremy is now in lockdown in the u.n. office on the tenth floor of a building. he heard six explosions and a number of gunmen are now holed up in what's known as the skyline building, which is not far from the u.n. office where jeremy is now and not far from the starbucks cafe, which appeared to be possibly the target by a number of attackers. possibly suicide bombers. at this point, that's yet to be confirmed. >> indeed. he said the last time he heard gunfire exchange was some 20, 25 minutes ago. the situation appears at this stage to be relatively calm. the areas are caordoned off. there's a high security presence at the scene. but very much so a fluid situation. >> to say the least.