At first he thought it was a UFO, then he thought it was a meteor, but whatever it was Vernon Chiefmoon has never seen anything like it.

Chiefmoon was driving to work Tuesday morning around 6:30 a.m. and caught a white flash through the sky out of the corner of his eye.

"It looked like it was heading over downtown. I wanted to take a picture but suddenly it turned into a green fireball and suddenly exploded into pieces and disappeared," he told Metro.

"I have never seen anything like it."

Chiefmoon said he has seen meteors and shooting stars before but this was different.

"It gave me an eerie feeling. I thought I was the only one who seen it but the traffic on Crowchild sort of came to a halt and it seemed everyone was watching," he added.

There has been no confirmation of what the object was at this time.