Does a Beholder eye ray break its Invisibility?

[OzDragon]

Howdy folks,

Question about invisibility: RAW states that invisibility ends when the invisible target attacks or casts a spell. A beholder eye ray isn't listed as a spell-like ability and isn't a ranged attack. Does it cancel invisibility?

I would say that it is an attack action. Attack actions cancel invisibility unless of course that it is greater invisibility.