Oscar Dixon of USA Today reports that after recent verbal and physical attacks on officiating crews, the NBA is looking into the incidents.

"Some of the incidents that have happened over the last few days concern me because they're not good for the game of basketball and not good for the NBA," said Stu Jackson, senior vice president of NBA basketball operations."

Jackson said that the league reviews every call of every game and also has observers at approximately half of all regular-season games. But the league does not fine officials for missed or incorrect judgment calls ? which have prompted recent criticism.