/usr/share/doc/libjbig2dec0-dev/NEWS.Debian.gz is in libjbig2dec0-dev 0.12+20150918-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libjbig2dec0-dev/../libjbig2dec0/NEWS.Debian.gz
/usr/share/doc/libjbig2dec0-dev/../libjbig2dec0/NEWS.Debian.gz