Issue during installation - not in gzip format

[Rashmi39]

wget -T 10 -t 3 http://www.openslr.org/resources/2/openfst-1.4.1.tar.gz
tar xozf openfst-1.4.1.tar.gz

gzip: stdin: not in gzip format
tar: Child returned status 1
tar: Error is not recoverable: exiting now
Makefile:101: recipe for target 'openfst-1.4.1' failed
make: *** [openfst-1.4.1] Error 2