Looking on the internet deeply has found these results:

When was a leak discovered? is the most popular phrase on the web.

When a leak was discovered? 146,100 results on the web	When was a leak discovered? 15,530,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
This, it is how he was discovered? The leak was discovered at around 4.30 this morning by the European Parliament services, who immediately took the necessary steps to safeguard the Chamber and the fittings and to seek to localise and stop the leak. You were on duty when The latest body was discovered? How old were you when this planet was discovered? The leak was discovered during the afternoon of 8 July 2008. Local residents complain that the leak was discovered in 2004 and the problem has continued to exist to this day. But no sightings till her body was discovered? So you guys were both present when the body was discovered?	He was a leak that needed to be plugged. We think there was a leak. He says there was a leak from Farhad's people, but I wonder. Or maybe there was a leak. Which means there was a leak. You wouldn't have even known there was a leak if Naval Intelligence hadn't discovered it. There was a leak in your office

When a leak was discovered?

146,100 results on the web

When was a leak discovered?

15,530,000 results on the web

More popular!

This, it is how he was discovered?
The leak was discovered at around 4.30 this morning by the European Parliament services, who immediately took the necessary steps to safeguard the Chamber and the fittings and to seek to localise and stop the leak.
You were on duty when The latest body was discovered?
How old were you when this planet was discovered?
The leak was discovered during the afternoon of 8 July 2008.
Local residents complain that the leak was discovered in 2004 and the problem has continued to exist to this day.
But no sightings till her body was discovered?
So you guys were both present when the body was discovered?

He was a leak that needed to be plugged.
We think there was a leak.
He says there was a leak from Farhad's people, but I wonder.
Or maybe there was a leak.
Which means there was a leak.
You wouldn't have even known there was a leak if Naval Intelligence hadn't discovered it.
There was a leak in your office