This article is more than 2 years old. The official was not authorized to be publicly named. Terrorist groups which have threatened it in recent years include Al-Qaeda and Isis. An officer at the scene told The Associated Press that police found no signs of the threatened bomb. ;This was a routine precaution.
qualified police officers took part in the blocking of a phone bomber.
( z0 participate :ARG0 ( z1 person :ARG0-of ( z2 have-org-role :ARG1 ( z3 police ) :ARG2 ( z4 officer ) ) :ARG1-of ( z5 qualify ) ) :ARG1 ( z6 block :ARG1 ( z7 person :ARG0-of ( z8 bomb :instrument ( z9 phone ) ) ) ) )
(z0 / participate-01
    :ARG0 (z1 / person
              :ARG0-of (z2 / have-org-role-91
                           :ARG1 (z3 / police)
                           :ARG2 (z4 / officer))
              :ARG1-of (z5 / qualify-02))
    :ARG1 (z6 / block-01
              :ARG1 (z7 / person
                        :ARG0-of (z8 / bomb-01
                                     :instrument (z9 / phone)))))
qualified police officers took part in the blocking of a phone bomber .
z1 :ARG1-of z5
z1 :ARG0-of z2
z2 :ARG1 z3
z2 :ARG2 z4
z0 :ARG0 z1
z0 :ARG1 z6
z6 :ARG1 z7
z7 :ARG0-of z8
z8 :instrument z9