Riddle number 643

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

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