You can review the system audit journals.
But you’ll need to have your system either auditing for object deletes or you’ll need to have auditing in place at the user profile level for admins and power users.
If none of this is in place then your logs won’t show you who deleted it.
Command to run:
<b>DSPAUDJRNE ENTTYP(DO) JRNRCV(*CURCHAIN) FROMTIME(’11/19/08′ ’00:00:00′) </b>
It will create a spooled file which you can search for the object name that was deleted.
Change the date range to whenever you think it was deleted.