Question of the Day: Whatever happened to Theo from Die Hard?

Watching Die Hard for the umpteenth time the other night, I suddenly realised that not all of the terrorists in the movie are killed. 

In the climax of the movie, the evil IT geek Theo (able to hack elevators, stop escalators, break safes etc) is getting ready to make a break for it in a stolen Ambulance when he is knocked out by Argyle, the sassy limousine driver.

Sassy limousine driver and inspiration to a young Usher

We know that at the end of the movie John McLane has been shot, blown up and beaten up, so decides to go back to his estranged wife's house for the palliative care that can only be provided by an illegal immigrant - driven by said limousine driver.

I can't administer care right now, I'm on the phone to a sassy limousine driver

But what ever happened to Theo?  Did the police find him, unconscious in a fake ambulance?  Or did he wake in time to flee the scene, only to go on and wreak havoc on elevators everywhere?  And finally, why didn't Argyle let the police know that one of the terrorists was knocked out in the car park?