Coach Jack Del Rio said he spoke to him about the issue after the game.
AP photographers snapped Lynch taking a seat on a cooler on the sidelines as the anthem played.
In his first game in an Oakland Raider uniform, Marshawn Lynch didn't play a down.
Lynch was not in the National Football League during Colin Kaepernick's kneeling protest against racism and police brutality last season but has previously expressed his opinion on Kaepernick's action.
Iranian Parliament Increases Funding For Missiles, IRGC In Reaction To US Sanctions
The measure comes in retaliation to new US sanctions on Iran over its ballistic-missile program and missile tests. Government representative Abbas Araqchi was also present in the Majlis session.
Anthony Martial to Tottenham
Details of the bid for the forward are still unclear, although RMC Sport have claimed United have already rejected it. Manchester United turned down both approaches, considering him off the market.
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It already has ballistic missiles that can strike Japan, a key ally and host to roughly 50,000 USA troops. South Korea's military also said it was prepared for swift action with respect to North Korea's moves.
True to form, Beast Mode left the locker room before media was allowed in.
But that isn't something that should come as a surprise to fans given that Lynch hasn't stood for the anthem in 11 years, according to NBC Sports Bay Area's Fallon Smith. You do your thing and we'll do ours.
Quarterback E.J. Manuel said he didn't know Lynch hadn't stood for the anthem.
Lynch rarely talks to the media but has voiced his support for quarterback Colin Kaepernick's 2016 season-long decision to kneel during the anthem to draw attention to what he saw as incidents of police brutality against people of color. "I can't really comment on it too much".