- Do they know who did it?
- No.

4 seconds sound clip from the The Asphalt Jungle (1950) movie soundboard.

You can hear this line at 01:15:14 in the Blu-ray version of the movie.

Quote context

[...]

- All right. Call me right away.

- Yes. Yes, I'll call you later.

- Don't forget.

- Yes.

- Can we go on playing?

- Certainly. Why not?

- Why, you're as pale as a ghost. What's the matter?

- Oh, I... Well, I just had some bad news. A man who works for me got killed.

- Oh, how awful. Was it an accident?

- No. No, it was, uh, an intentional killing.

- Do they know who did it?

- No.

- Oh, when I think of all those awful people you come in contact with... Downright criminals - I get scared.

- Oh, there's nothing's so different about them.

- After all, crime is only... a left-handed form of human endeavor.

- Ever been in Mexico City, Dix?

- Nope.

- It's 8000 feet up. The air is very pure.

[...]