Ja Morant apologised after an incident at a nightclub on Saturday led to the Memphis Grizzlies slapping him with a two-game suspension.
The point guard is under investigation by the NBA after appearing to show a gun during an Instagram Live video.
Morant will miss at least two games, the Grizzlies announced, with the 23-year-old to be absent for Sunday's meeting with the Los Angeles Clippers and the showdown with the Los Angeles Lakers two days later.
In a statement released to ESPN shortly after his suspension was confirmed, Morant apologised for his actions.
"I take full responsibility for my actions last night," he said.
"I'm sorry to my family, team-mates, coaches, fans, partners, the city of Memphis and the entire Grizzlies organisation for letting you down.
"I'm going to take some time away to get help and work on learning better methods of dealing with stress and my overall well-being."
Statement from the Memphis Grizzlies pic.twitter.com/CLB2TG5nnI— Grizzlies PR (@GrizzliesPR) March 4, 2023