Riddle number 3271

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

  Chest 1: The treasure is in chest 4.
  Chest 2: The chest 3 is empty.
  Chest 3: The chest 1 is lying.
  Chest 4: The chest 2 tells the truth.