According to this tweet from the Associated Press' Dionisio Soldevila, Simon is accused of murder in his native Dominican Republic.
I'm told that a few of his teammates are aware of the story and are "in shock."
I'll obviously have more to report later.
Here's more on the incident.
Simon is the primary suspect in a shooting that killed 25-year-old Michel Castillo Almonte and wounded his 17-year-old brother during a New Year's Eve celebration in the northeast coastal town of Luperon, according to a police statement.
The Orioles aren't likely to comment until receiving more information.