According to a statement given to media outlets by the Ohio State Highway Patrol, Altman was stopped by officers after they said his car had incorrectly crossed lanes on a Cleveland highway at around 9 p.m. on Friday.
The driver was then arrested for OVI and given a breath test shortly after, which he declined, according to the police.
"We are aware that Cavaliers President of Basketball Operations Koby Altman was involved in an incident. The Cavaliers sent a statement to ESPN saying, "We are currently gathering further facts and have no further comment at this time.
Altman, 41, took over for David Griffin, who had crafted the Cavaliers squad that won the 2016 NBA Championship, and was named NBA general manager in 2017. Altman had spent 11 years working in the team's front office.
When Altman extended his contract through the 2027–28 season in 2022, he was elevated to the position of president of basketball operations.