NEW : Black market for claimed meteorites emerges in Russia , state media report . Comment: Opinion : A larger fragment may be under the frozen surface of the lake , scientists say . The explosion Friday damaged thousands of buildings and injured 1,000 people .
NEW : Black market for claimed meteorites emerges in Russia , state media report . Comment: A larger fragment may be under the frozen surface of the lake , scientists say . The explosion Friday damaged thousands of buildings and injured 1,000 people .