Solution tar: This does not look like a tar archive

Solution to untar tar.gz

Issue
-------
$ tar -xzf  file.tar.gz
tar: This does not look like a tar archive
tar: Skipping to next header
tar: Exiting with failure status due to previous errors

Solution
-----------
$ gzip -d file.tar.gz
This command will create file.tar

Then do
$ tar -xf file.tar