The NBA is reviewing an incident which occurred during the fourth quarter of the Bucks-Celtics' clash on Saturday night, Marc Stein from ESPN.com is reporting.

According to Stein, Andrew Bogut's left arm caught Kevin Garnett in the mouth on the way down as the Australian center drew a shooting foul at the rim. Garnett responded with an open-handed swipe that appeared to connect with Bogut's forehead.