An officer at the scene told The Associated Press that police found no signs of the threatened bomb. ;This was a routine precaution. Terrorist groups which have threatened it in recent years include Al-Qaeda and Isis. This article is more than 2 years old. The official was not authorized to be publicly named.
It was the Al-Qaeda group that had threatened this place.
( z0 threaten :ARG0 ( z1 criminal-organization :name ( z2 name :op "Al-Qaeda" ) ) :ARG1 ( z3 place :mod ( z4 this ) ) )
(z0 / threaten-01
    :ARG0 (z1 / criminal-organization
              :name (z2 / name
                        :op1 "Al-Qaeda"))
    :ARG1 (z3 / place
              :mod (z4 / this)))
It was the Al-Qaeda group that had threatened this place .
z1 :name z2
z2 :op1 0
z0 :ARG0 z1
z3 :mod z4
z0 :ARG1 z3