WARINING MAIL TO RETURN COMPANY LAPTOP WITH ALL CONFIDENTIAL

our employee left the job due to some argument happened between him and M.D sir , so he still not return company laptop not surrender. and his position was Technical HOD / Director age 56 may be
and am not given any appointment letter to him also ( verbal every discussion between him and M.D sir including salary also)
now M.D sir told me take whatever want action just i want company asset back ( laptop company secret credential in that laptop)
so please let me know how to handle and how to mail
past 6 days he given whats up msg to M.D and he is blackmailing then wht to do
he is so rude and arrogant with every staff .
please help

Dear Leelab
,Have your Organisation signed with all employees whom Company's asssets has been given .Any written document is available ?Normally in Appointment letter is mentioned Secret Clause ?Diversion of info of Company .
Pl check
Regards

Dear Leelab,
It is not clear how many days he worked in your company.
Before contemplating on any action please find out if there is any document
which states that he has taken the Laptop.
Are you having this recorded in any register in which he has signed?
Is there any e mail evidence?
Is there any offer letter that can be produced?
Take a photo of his whats up message along with his mobile number display.
It will have the message and his mobile number.
In this way you can bring to record his intentions.
V.Raghunathan

no we dont have any proof, What to do
Total 11 month working days.
now new rumor is he is opening own business the same industries and he is try to contact our client.