Safety Brandon Meriweather, here walking off the field after an injury against the Packers, could face discipline from the NFL for a helmet-to-helmet hit Sunday. (Tom Lynn/Associated Press)

(updated 6:42 p.m.)

Washington Redskins safety Brandon Meriweather will be fined by the NFL but not suspended for his hit Sunday that knocked Green Bay Packers running back Eddie Lacy out of the game with a concussion, two people familiar with the situation said. The amount of the fine was not immediately clear.

Meriweather in 2010 was fined $50,000 for a helmet-to-helmet hit, and in 2011 received fines of $20,000 for a helmet-to-helmet hit and $25,000 for unnecessary roughness.

Meanwhile, Meriweather on Monday underwent additional testing for the concussion of his own that he suffered in the second quarter of Sunday’s game. But Redskins Coach Mike Shanahan said he didn’t expect to have an update on his status until Wednesday.

The hit that knocked Meriweather out of the game took place 30 seconds into the second quarter. Meriweather went down in a heap and didn’t move for several minutes. After the game, Meriweather walked around the locker room and talked with teammates, but didn’t speak to reporters as part of the league’s policy on the handling of players that have suffered concussions.

Teammates on Monday morning said that they hadn’t seen Meriweather at the facility. Meriweather missed the first game of the season while nursing a groin injury. Last season he missed all but one half of a game because of knee injuries.

Meriweather appeared to launch himself into Lacy on the open-field hit. He didn’t appear to do so on the sideline collision with Green Bay running back James Starks.

Asked if he believed that Meriweather’s hits on Sunday were legal, Shanahan said, “To be honest with you, the first one, it looked like the running back as kind of going downhill, and when Brandon, when he went for the tackle, it looked to me that it was perfect. Then all of a sudden, when he ducked his head, I couldn’t really tell in slow motion because I didn’t see the TV copy, I just saw the video  — exactly where the contact was. The second one, on the sideline, yeah, that’s what you are supposed to do. That’s a legal hit.””

Meanwhile, place kicker Kai Forbath, who missed Sunday’s game with a groin injury, isn’t scheduled to kick in practice until Friday, so the Redskins will not know about his status for Sunday’s game against Detroit until then at the earliest. The team on Saturday signed place kicker John Potter, and he played in place of Forbath on Sunday. Potter missed his lone field goal attempt of the game – a 50-yarder.

Staff writer Mark Maske also contributed to this report.

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