Look! Up in the sky! It's a bird! It's a plane!

It's a cast iron brick?

I knew the air was dirty in New Jersey, but I had no idea it had come to this.

The Federal Aviation Administration says a piece of hot metal that crashed through the roof of a Jersey City business did not come from an airplane.

FAA spokeswoman Arlene Salac says investigators examined the metal and determined it is made of cast iron, which is not used in airplanes. She says it's up to local authorities to determine where the object came from.

Owner Al Smith was fork-lifting a sofa onto a wooden storage platform around 10 a.m. at his moving company when he heard a sound he thought was a bomb.

A piece of warm metal the size of a brick came crashing through the roof just steps from where he was standing. It splintered a wooden beam and crashed into a shelf.

Smith tells WCBS radio that no one was injured. He plans buy a lottery ticket, saying it's his lucky day.

He says the metal is about the size of a brick and came crashing through the roof around 10 a.m.Officials at the scene also confirmed to WCBS radio that the metal was too hot to touch for about 30 minutes after crashing through the roof.