The lawyer who accompanied the 24-year-old Dallas Cowboys cornerback to the Clark County Regional Justice Center declined comment Friday about Jones' appearance.
Jones pleaded no contest in December to a disorderly conduct charge and agreed to cooperate in the shooting investigation.
He was accused of inciting a melee inside the club that led to the shooting outside during the weekend of the 2007 NBA All-Star game.
The Las Vegas Sun reported Jones spent about 90 minutes inside a grand jury hearing room and made no comment as he left the courthouse with his lawyer, Robert Langford, and a bodyguard.
Adam "Pacman" Jones appeared before a Las Vegas grand jury Friday.
http://accesswdun.com/article/2008/7/211475