DeAndre Liggins was arrested on Saturday in Oklahoma City for a complaint of domestic abuse.
KOCO 5 News in Oklahoma City reports Liggins was involved in a physical altercation with a woman.
"We are aware of the situation and take this matter seriously," Sam Presti said in a statement. "We are in the process of gathering more information and have no further comment at this time."
Liggins averaged 1.5 points and 1.4 assists in 39 games for the Thunder last season.
Liggins is on a non-guaranteed contract for next season and must make the team to earn his salary.