FREEHOLD TOWNSHIP, N.J. — A metal, rock-like object about the size of a golf ball and weighing nearly as much as a can of soup crashed through the roof of a Monmouth County home, and authorities on Wednesday were trying to figure out what it was.

Nobody was injured when the oblong object, weighing more than 13 ounces, crashed into the home and embedded itself in a wall Tuesday night. Federal officials sent to the scene said it was not from an aircraft.

The rough-feeling object, with a metallic glint, was displayed Wednesday by police.

There's some great interest in what we have here," said Lt. Robert Brightman. "It's rather unusual. I haven't seen anything like it in my career."

He said he hoped to have the object identified within 72 hours, but declined to name the other agencies whose help he said he had enlisted.

Police received a call Wednesday morning that the metal object had punched a hole in the roof of a single-family, two-story home, damaged tiles on a bathroom floor below and then bounced, sticking into a wall.