He is not the same person

"Sir, Please have a look. The guest named Mr Lee checked in the hotel this noon. He informed us that he had to attend an important meeting with some visitors. This afternoon three persons joined him. He was going to stay here tonight. Now, look. What happened to him." The receptionist showed him the guest list.

"Hello, mister. Have you seen the face of the dead body properly? Is this the same person there." Jackson opened the gallery of his mobile and showed Mr Lee's photo to the hotel workers ,who have seen the dead body. 

The worker took the mobile and observed the photo very carefully.

"No sir. He is not the same person." One of the worker replied.

"Are you sure?" Jackson asked again.