Very sad indeed . As a regular ( and frequent ) user of Terminal 2, I have used the walkway many times and never thought about its possible collapse .
According one news speculator in French TV, the terminal was evacuated just prior the collapse, thus limited the number od casualties...who were mostly chinese apparently.
According the same news speculator , The pillars that support the structure are n likely to be the cause, as some of them were showing cracks , and were reinforced by carbon rings , during the construction .
Condoleances to the famillies.