What did the police torture him for? (2)

Hi teachers,
The context is part of a longer fictional narrative for beginners.
‘But why?’ Olivia whispered. ‘Why did they do that?’
‘They wanted a name, but I didn’t tell them.’
‘What name?’
‘The name of the President’s murderer.’
Would this be an appropriate question?
What did the police torture Alex for?
To have the name of the president’s murderer.

Thanks in advance.

Why did the police torture, Alex?

They wanted the name of the president’s murderer.
They wanted to find out who had murdered the president.
They wanted to know who had murdered the president.
To discover who the president’s murderer was.
etc, etc.

Hi Beeesneees,
Thanks for yours.

RtL