NBA coaches on Friday evening have been questioned by the press about gambling.

"It's very important for us to continue to just be educated and mindful of everything that has to do with our business," Mitch Johnson, the head coach of the San Antonio Spurs told reporters.

Willie Green, the head coach of the New Orleans Pelicans, said "there's also some difficulties that we all deal with with having gambling part of the game."

The comments were made after Portland coach Chauncey Billups and Miami guard Terry Rozier were among nearly three dozen people arrested Thursday for what federal law enforcement officials described as their involvement in various illicit gambling activities.

AP video by Greg Beacham & Brett Martel