IAEA talking to Tehran about university uranium

From AP via JPost:

Iranian and UN nuclear officials began a new round of talks here on Monday, this time to probe the source of weapons-grade uranium that was found at Teheran's university, the official IRNA news agency reported.

It was not clear from the report how or when the weapons-grade uranium was discovered at the Technology faculty of the state university.

This uranium was not found recently, but during IAEA's last visit to Tehran.

I wonder what the NIE's thoughts on this are?

Also, see Alan Dershowitz' take on the NIE fiasco.