Riddle number 641

In these 4 sentences, at least 2 tell the truth and 1 is lying.
The treasure chest tells the truth.
Where is the treasure?

  Chest 1: This chest is empty.
  Chest 2: The treasure is in chest 4.
  Chest 3: The chest 2 is empty.
  Chest 4: The treasure is not in chest 3.