How did you teleport it? Use a regular scripted_sequence to teleport him. Then use another to make him walk toward the scientist and kill him.
I made a script like that only that the scientist also screamed. It all looked so nice, I will post an example map on advance scripting.
You actually need to work with multi_managers to get it to work. I'll show it to you in the example.
First a zombie will eat a scientist and when you take a crowbar he'll get up nicely and slowly. Then a little sequence in a room next to you will happen, the script you want to make, only that the scientist will try to escape first. Then the zombie will break open the door.
Done that once and I will show you how to do it.