If the company wants to it can go for a civil suit for recovery of damages according to your contract.
But they are also initiating criminal action on false allegation(as u say) of missing documents. If they are keen, u can be arrested.
Above two are the possible directions in which things might unfold.
If you want to live in peace go meet them now....if u think you are absolutely clean then wait for the letter form lawyer and you can file a suitable reply, approach criminal court and only thereafter think about outside court settlement with the Company after you get favourable order from the court.