UPDATE: From Adam Schefter, Tuesday morning:

More definitive scans today but initial tests showed small fracture in Aaron Rodgers' collarbone that could sideline him about three weeks. — Adam Schefter (@AdamSchefter) November 5, 2013

Taylor Price, senior reporter covering the San Francisco 49ers, tweeted Monday night that Packers quarterback Aaron Rodgers has a broken collarbone.

Aaron Rodgers reportedly suffered fractured left collarbone. — Taylor Price (@TaylorPrice49) November 5, 2013

And then, Zack Zaidman said on the radio that it was, indeed, a fracture.

.@ZachZaidman reporting Aaron Rodgers has a fractured collarbone. — Adam Hoge (@AdamHoge) November 5, 2013

Rodgers was sacked by Shea McClellin in Green Bay's opening drive against the Chicago Bears, and landed hard on his left shoulder. He was taken to the locker room a few minutes later for x-rays, but the team did not provide any updates other than he would not return to the game.

Price sent his tweet at the beginning of the 3rd quarter, or about 90 minutes after Rodgers went to the locker room. The others came within minutes after that.

We will provide more updates as they are available, but in the meantime, we send our thoughts to Rodgers. Such terrible news, if true, for one of the league's most talented quarterbacks. The NFC North will definitely be a little more interesting moving forward.

Veteran Seneca Wallace steps in for Rodgers at quarterback in the meantime.

Stay tuned...