A utility official later said it was due to a system failure. U.S. officials froze those funds indefinitely, they said. The letter listed details for four police, aged between 22 and 25 years, including a female officer. Adding to a sense of unease, electricity supplies were cut in many parts of the country on Friday. Bachelet said more than 1,700 people had been arrested, including 29 journalists.
Two police officers were mentioned in the letter.
( z0 mention :ARG0 ( z1 letter ) :ARG1 ( z2 person :quant 2 :ARG0-of ( z3 have-org-role :ARG1 ( z4 police ) :ARG2 ( z5 officer ) ) ) )
(z0 / mention-01
    :ARG0 (z1 / letter)
    :ARG1 (z2 / person
              :quant 2
              :ARG0-of (z3 / have-org-role-91
                           :ARG1 (z4 / police)
                           :ARG2 (z5 / officer))))
Two police officers were mentioned in the letter .
z2 :quant 0
z2 :ARG0-of z3
z3 :ARG1 z4
z3 :ARG2 z5
z0 :ARG1 z2
z0 :ARG0 z1