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)

The NFL has fined Redskins strong safety Brandon Meriweather $42,000 for his helmet-to-helmet hit with Green Bay running back Eddie Lacy on Sunday, a person two people with knowledge of the situation confirmed.

The hit took place on the sixth play of the Redskins’ 38-20 loss to the Packers at Lambeau Field. Meriweather appeared to launch himself into Lacy, drilling him in the side of the helmet. Lacy left the game and was shortly after diagnosed with a concussion. No personal foul was called.

Meriweather has a reputation of delivering violent hits. In 2010, he  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.

Meriweather in the second quarter suffered a concussion himself after he was involved in a collision with Packers backup running back James Starks early in the second quarter.

Meriweather went through a series of tests Sunday, and again Monday and Tuesday. On Wednesday, Meriweather re-joined his teammates on the field during the opening portion of drills, but it wasn’t immediately clear how much of a workload he received.

● Related: SS Meriweather returns to practice field

Meriweather did not speak to reporters during the brief stint of time that he was in the locker room during media availability Wednesday morning.

Have a Redskins question? E-mail Mike Jones at with the subject line “Mailbag question” for him to answer it in The Mailbag on Tuesday.

Follow: @MikeJonesWaPo | @MarkMaske | @Insider | Insider on Facebook

What’s ahead:

● Santana Moss’s comments on Robert Griffin III.

More on the Redskins and NFL:

Morris laments lack of preseason work

Garcon says Griffin’s mending knee is elephant in the room

Reid: Redskins offensive struggles a bottom-line problem

 NFC East off to ugly start | Defense heading in the wrong direction

The Early Lead: Broncos lose T Clady for the rest of the season | More NFL