The
Farc
guerrillas
released
the
workers,
who
were
contracted
as
engineers
by
Canada's
Gran
Tierra
Energy,
on
Thursday
according
to
military
sources
cited
by
Reuters.
The
contractors
were
working
in
southern
Colombia
when
they
were
taken
captive
on
Wednesday.
Gran
Tierra
did
not
immediately
respond
to
a
request
for
comment.
The
Farc
has
been
stepping
up
its
activity
in
Colombia
despite
ongoing
peace
talks
with
the
Colombian
government
in
Havana,
Cuba,
that
began
in
November.
Kidnappings
and
pipeline
explosions
-
hallmarks
of
the
Farc
-
have
been
on
the
rise
in
recent…