Weird lighting from point light on Sprites/Diffuse shader.

As you can see in the image I get weird behaviour from point lights on diffuse sprite shaded materials. In the image I only have 1 point light but I get some weird effects on the 2D sprites below the light.

Any idea what could be problematic?

49366-paint.png

After a bit of testing I noticed this error is created from having 2 duplicate sprites on top of each other. Removed the duplicate and now it looks good.