(S (S (BASENP (JJ Local) (NNS officials)) (VP (VBD said) (SBAR (S (NP (NP (BASENP (NN three) (NNS gunmen)) (VP (VBG wearing) (BASENP (NN suicide) (NNS vests)))) (PRN (COMMA ,) (PP (JJ disguised) (PP (IN as) (BASENP (NN police)))) (COMMA ,))) (VP (VP (VBD stormed) (BASENP (DT the) (NN compound))) (PP (IN around) (BASENP (NN dawn) (DT that) (NN morning)))))))) (PERIOD .))