Cannot find photos transferred from bluetooth after sometime on lumia 520

[Abhijith CD]

I had got some photos transferred from my friend's lumia 520 to set them as my lock screen. I saw them under "saved pictures" in "Photos" hub and successfully set a picture for lock screen and for the background of "Photos" hub. After that I cannot find those pics in my "Saved Pictures" menu. But the lock screen and background are intact. So the pics are definitely still in my phone. Can someone help me regarding this issue as to how to view those pics or delete them from phone memory?

 

[Laura Knotek]

Did you save the pictures to a microSD card?

 

[Abhijith CD]

No.. I dont have an SD card and the photos were on phone memory itself