It disappeared into the Tiber, general, at Ponte Umberto.

2 seconds sound clip from the 20 Million Miles to Earth (1957) movie soundboard.

You can hear this line at 01:12:17.484 in the Blu-ray version of the movie.

Quote context

[...]

- We'll need artillery and tanks immediately.

- It's up one of the side streets.

- Yeah, I know. I can hear it.

- Doc, take them to the embassy. I'm gonna track this creature as long as I can.

- Right.

(Woman screaming, people panicking )

- This is colonel Calder. Get me general McIntosh. And hurry. This is an emergency.

- It disappeared into the Tiber, general, at Ponte Umberto.

- What do you think? Would hand grenades force it out?

- I don't know. I can't tell what that thing will do or where it'll do it. It's worth a try, sir.

- There's an artillery unit deployed at, uh...

- Palazzo di giustizia.

- The palace of justice right across the bridge from where you are. They'll give you all the help you need.

- Start blasting it, Bob.

- We're moving up with another unit over on the other section of the Tiber.

- Yes, sir.

[...]