Conversation so far:
When did Steve die?
4 September 2006.
how did he die?
All of a sudden [the stingray] propped on its front and started stabbing wildly with its tail.
Where was he when the sting ray struck?
Irwin was on location at Batt Reef.

Question: was he shooting a documentary at the time it happened?
Self-contained rewrite: Was Steve Irwin shooting a documentary at the time?