How to erase permanently discovered photos on LG G3

[AC Question]

Dear All,
I downloaded an app that discovered too many early deleted photos. Now how can I delete these discovered photos permanently? I mean photos that I fount into my Android LG phone, and not on SD Card. Thanks

 

[ManiacJoe]

Which phone?
Which version of android?
Which carrier?

What is the app that did the "discovering"?
What is the purpose of this app?

Some apps are specifically designed to recover deleted files, commonly used by users who accidently delete files they wanted to keep.
To make the deleted files stay deleted, you would probably need turn on the phone's encryption for the internal storage and the external SD card.