BROSSARD, Que. - Montreal Canadiens forward Zack Kassian has entered a substance abuse program after being involved in a motor vehicle accident, the NHL and the NHL Players Association announced Monday.

Kassian, 24, was placed in "stage two of the substance abuse and behavioral health program (SABH)," they said in statement.

"Under the terms of the joint program, Kassian will be suspended without pay until cleared for on-ice competition by the program administrators."

Earlier in the day, Canadiens general manager Marc Bergevin said Kassian showed a "lack of character" when he was involved in the accident that left him with two broken bones.

Kassian broke his nose and left foot in the crash that occurred around 6:30 a.m. ET Sunday in Montreal. Two women with him in the vehicle also suffered non-life threatening injuries.

"I don't have all the information, but it's disappointing to say the least," said Bergevin. "I addressed the whole team this morning.