Mass Close Open Tasks left by Ex Employees

Hi

Advanced Collections EBS R12

There are a bunch of old open tasks owned by employees who have left the business.

Task Name Dunning Callback

We just want to close these Tasks now as they are way out of date.

I can see how to close each one in the UWQ if logged in as the Ex Employee but this is time consuming. 

Is there a way to close off all the Open Tasks quickly under a Manager Responsibility?

Many thanks!

Robert