English transcript

So nearly a week after a strike killed scores of Iranian students in Minab,

it seems more and more likely that the US was responsible.

A new satellite image shows an Iranian Revolutionary Guards base and an elementary school in southern Iran.

Here you see craters in several of the buildings, including the school.

They were hit in their exact centers, suggesting precision strikes, experts say.

A wall separates the school and the base.

Satellite images from December show dozens of people in what appears to be a handball court at the school.

Reuters now reports that US military investigators believe US forces were responsible,

though they haven't yet reached a final conclusion.

It paints a picture of multiple simultaneous or near-simultaneous strikes.

And it looks like these were delivered with explosive munitions, probably air-delivered.

I think the most likely scenario in this case is that it's a US

or Israeli airstrike gone awry.

It's probably a targeting failure somewhere in the targeting cycle and intelligence failure.

The Israeli military say they weren't operating in the area.

To date, we've hit over 2,000 targets as...

American military officials say they carried out extensive strikes in this area.

They've released this map which shows strikes in southern Iran.

The base and the school in Minab are located here.

We, of course, never target civilian targets,

but we're taking a look and investigating that.

The damage we've seen to the buildings is quite significant,

and it's unlikely it was something like an air defense missile fired by the Iranians, for example.

With Iran's internet blackout, images and footage from the ground are limited,

and CNN has not been able to examine fragments from the weaponry used,

and so any assessment is inconclusive.