Belgian officials also released a photo taken from closed circuit TV of three men with luggage carts.

比利时政府公布了当时推着行李车的三名疑犯的照片，这些照片是从监控中提取的。

And the photograph they're focusing on now is of three men wheeling luggage carts through the airport.

调查依据的照片显示，3名男子正推着行李车经过机场。