Who's eating sally lightfoot crab?

[superh]

Problem: 2 days ago when I woke up, my sally lightfoot crab (large, about 3" wide from foot to foot) was missing 2 front and 2 back legs so that it had 4 legs; today it has 3 legs left
I have added no new tank mates in over a month. Who do you think is the likely culprit?
Here's what I have in a 40 gallon tank with about 50lbs of LR:
2 dwarf lion fish
2 emerald crabs
1 purple reef lobster
1 cleaner shrimp
1 coral banded shrimp
small cleaner crew

 

[n_sarno]

I would think that it could be your lionfish or your CBS

 

[nicetry]

My money's on the lobster.

 

[reefrobert]

The lobster did it ! they can get to be 16", and that dinner for one

 

[battosai]

Definatelly the Lobster!!!!

 

[fedukeford]

lobster, lions, or CBS, are you sure its not a molt though?

 

[superh]

Well, the sally lightfoot passed on this morning; nothing ate it though, it was just laying there upside down. I tried feeding it to the lionfish but they weren't interested. Is it possible it died of old age? It was very large (probably 3" from toe to toe) and I fed it well with silverside pieces and seaweed/algae and nothing seemed interested in eating its carcas. Oh well...