Chaos as conflagration chokes city in Brazil (6)

I believe the answer is:

osasco

I'm a little stuck... Click here to teach me more about this clue!

'brazil' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'chaos as conflagration chokes city' is the wordplay.
'OSASCO' is hidden within the letters.
But, I'm uncertain how this is indicated.

'in' is the link.

Can you help me to learn more?

I've seen this clue in The Hindu.

Want a hint initially instead of a full solution? Install my app