NBA rookies Mario Chalmers and Darrell Arthur were sent home from the NBA's mandatory rookie transition program Wednesday in Rye Brook, N.Y.

According to a report on ESPN.com, several sources have said that the two former stars with the University of Kansas were caught in their hotel room with marijuana and women.

Visitors are not permitted at the four-day event, which is required of all newcomers entering the league and focuses on issues such as life skills, handling finances, the importance of character and image, the difference between NBA and NCAA game rules, legal matters and dealing with media.

"The players were sent home for violating program rules," NBA spokesman Tim Frank said. "They will be appropriately sanctioned and will have to repeat the program next year."

The Miami Heat, who drafted Chalmers, and agent Sam Goldfeder both confirmed the point guard left the program.

"I'm in the process of investigating what exactly is going on," Goldfeder said. The Heat declined to comment but said that they were also investigating the incident.

Chalmers, who forced overtime with a jumper in the Jayhawks' 75-68 win over Memphis in the national championship game on April 7, was drafted 34th overall by the Minnesota Timberwolves in this year's NBA Draft.

He was quickly dealt to Miami, where he's expected to compete for the starting point guard spot.

Arthur, a 6-foot-9 forward who was chosen late in the first round by New Orleans, was traded three times on draft night and signed his rookie contract with Memphis in early July. The Grizzlies acknowledged Arthur "was sent home … for violating program rules" but declined to give details.

"He will be sanctioned at a later date, and he will have to repeat the program next year," team spokesman Dustin Krugel said.

Jayhawks head coach Bill Self refused to discuss the specifics of the situation, but was quick to praise his former players..

"We really don't know all the facts yet, and I certainly would never comment publicly on any personal matter concerning any player I have ever coached," Self said. "Beyond that, I can say that both Mario and Darrell were great to coach. They played a huge role in our success the past few years, in large part due to their unselfishness and the sacrifices they made for our program."