One of my millipede died?

[KravenVolkov]

Hi everyone I came back today from work and I found one of my millipedes like this. (picture below)

I have them since a year and a half ago and never see any behavior like this so probably I know what happened here (( but I want to make sure.
What you think about this? I am really upset about it they were two in a really big enclosure 80x45x45.

Thanks

 

[Arthroverts]

Sorry to be the bearer of bad news, but if it is limp, then it's dead. Old age perhaps? Is this an adult?

Thanks,

Arthroverts

 

[KravenVolkov]

Yes it's an adult yesterday I saw him and is totally dead .
Thanks for your answer