A fireball that brightened the Tokyo sky earlier this month has been identified as a meteor after fragments were found in a neighboring prefecture, a national science museum said Monday.

The meteorite, which landed on a condominium in Narashino, Chiba Prefecture, is believed to have originally had a diameter of a few centimeters but likely broke into two pieces, according to the National Museum of Nature and Science.

The pieces weigh 63 grams and 70 grams, respectively, it said. A female resident of the condominium, who was awakened by a loud noise in the early hours of July 2, discovered a rock fragment in the common corridor just outside her room later that morning.