Updated

Belgian authorities are investigating whether the spectacular diamond heist at Brussels airport in February might have yielded much more than the $50 million reported at first.

The Brussels prosecutor's spokeswoman Anja Bijnens said Thursday that Moroccan investigators cooperating in the probe have said that the booty was "much bigger than originally anticipated."

The Morgen newspaper said the Moroccan investigators placed the total at 300 million euros ($400 million), but Bijnens would not confirm the figure.

The information emerged after Belgian authorities recently visited counterparts in Morocco, where several threads of the probe have led.

The Feb. 18 theft ranks among the biggest diamond heists of recent times.