Something moving out of the map in top lane?

Hey so i was playing Top lane as teemo earlier, and i usually watch for the dragon that comes up around like 1:15? or something (thats out of the map) But i was paying attention to the finer details right, and i was looking hard, like looking at small things and textures, and around the same time minions got to lane, which was like 1:40? i think, i started seeing 3 small blurry objects moving way in the back. like youd never see it, unless you were fixed on that location. I'll try and find it again, but someone wanna check this out? it was weird. P.S it was near or past the cracked part of the rift, where the river is. I honestly dont remember. But yeah, someone should check this out.