San Antonio, TX (SportsNetwork.com) - San Antonio Spurs coach Gregg Popovich missed Wednesday night's game against Indiana after undergoing a minor medical procedure.

Popovich, the longest tenured NBA head coach, will miss an undisclosed period of time.

"He will be back soon," said first-year assistant Ettore Messina, who took over for Popovich.

Messina, a member of the Italian Basketball Hall of Fame, is a two-time Euroleague Coach of the Year.

He is the first Italian to coach an NBA game.