Afternoon Update: likely source of ‘poo balls’ revealed; video emerges of Louvre heist; and our nerdiest quiz

An unidentified white and grey ball on Dee Why beach, Sydney, in January. A newly released report suggests they likely came from a deepwater ocean outfall. Photograph: Brook Mitchell/Getty Images

Good afternoon.

In an exclusive from NSW state correspondent Anne Davies, a secret report has revealed the likely source of the fatberg balls that closed a raft of Sydney beaches last summer – with most coming from the deepwater ocean outfall at Malabar.