Hi Hanurao,
Are you considering treating his absence from 13.6.20 till 1.7.20 as leave and pay or treat the spell as absent/LWP? Taking a lenient view, if at all there is atleast an oral information that he was not in a position to report for duty, you may consider debitting his leave a/c and settle the matter.
My view is, since he had not applied for any leave for this period till death you may treat the spell as LWP and take on record 1.7.20 as exit and close the matter.
On the other hand, if you will treat the spell as 'resigned or terminated' you will have no records to prove and proceed as per the applicable procedure for closing the issue. This is not approprite.
One more option is to close the matter as 'abscond' as on last attendance marked and terminate him on record and proceed further. With no other record, this is the only choice.