CI and Row Locking

[eluser]njkt[/eluser]
Hello,
My question is in regards to database row locking. How is this accomplished with codeigniter?

My database is MySQL/InnoDB.

The basic problem is that when I remove/update based on an ID it needs to lock that row and the associated rows from the other tables so other users cannot modify it while this action is in progress.

I appreciate any assistance.