LAPD's North Hollywood station says Ward was arrested and booked for robbery on Monday.
Jail records indicate the 43-year-old Ward was being held on $250,000 bail.
Ward was drafted in 2004 and played through 2011. He was a member of the underdog Giants team that beat Tom Brady's 16-0 New England Patriots to win the Super Bowl in the 2007-08 season. He also had stints on the New York Jets, the Tampa Bay Buccaneers and the Houston Texans.
While with Tampa Bay, he reportedly signed a four-year, $17 million contract, though the team cut him a year later.