How can I totally remove mongodb? [duplicate]

Question

I used the following to remove all mongodb packages so I can start fresh, but it does not seem to be working. How can I totally remove mongodb?

I did:

sudo apt-get autoremove mongodb-*
sudo apt-get purge mongodb mongodb-clients mongodb-server mongodb-dev

None of all that works. When I do mongod --version I still get:

db version v2.6.10
2017-10-01T00:20:56.172-0400 git version: nogitversion
2017-10-01T00:20:56.172-0400 OpenSSL version: OpenSSL 1.0.2g  1 Mar 2016

When I run dpkg -S $(which mongod) I get the following:

mongodb-server: /usr/bin/mongod

The same for mongo.

Answer