Stardust Crusaders - Chapter 4 
Joseph explains that DIO is still alive, but Jotaro doesn't believe in such a story. To give proof of his existence, the old man takes a camera and activates his Stand, Hermit Purple. His Stand takes the form of purple thorns around his hand, which he uses to break the camera. This produces a picture with a technique that Joseph calls Psychic Photography.
The photo from Joseph's camera shows DIO with the Joestar birthmark on the back of his neck as well. Joseph thinks that DIO took the body of his grandfather during an incident on the Atlantic Ocean.
Avdol says that the Stand powers of the Joestar Family are linked to DIO, whereas Avdol was born with his powers. Despite all of this shown to him, Jotaro, nonetheless, hardly believes his grandfather’s information and evidence. Meanwhile, it is shown that DIO has become aware of this link as well, as he feels Jonathan's descendants watching him. He makes preparations to silence the Joestar lineage. On his way to school, Jotaro is followed around by a group of schoolgirls and is then attacked by a mysterious young man.