The Houston Rockets have been fined by the NBA for a trip to Las Vegas last week.

League spokesman Tim Frank declined to disclose the amount of the fine, saying it is an internal matter.

"They took them to Las Vegas in the middle of a road trip, and that's against salary cap rules," Frank said Monday night.

Rockets general manager Carroll Dawson told Houston television station KRIV that he understands that the Rockets violated the rules and expects to find out the details on Tuesday.