LAS VEGAS — Former NBA all-star Antoine Walker appeared briefly in a Las Vegas court to face criminal charges in a case involving an $822,500 casino gambling debt.

The 6-foot-9 Walker said nothing inside or outside the courtroom as he appeared Monday with his lawyer, Jonathan Powell, on three felony counts of writing bad checks. Powell also declined comment.

Each charge carries a possible one- to four-year prison term.

Walker remains free on $135,000 cash bail posted Thursday following his arrest at a Lake Tahoe hotel. Walker was in northern Nevada to play in a weekend celebrity golf tournament.