Charlie Sheen talked with the media and fans as he arrived at DAR Constitution Hall. (Mark Gail/The Washington Post)

[Update: Washington Post’s Paul Duggan and Mary Pat Flaherty have more to say about Charlie Sheen’s police escort to his DAR Constitution Hall tour stop.]

So how exactly did Charlie Sheen get that police escort on Tuesday night from the airport to DAR Constitution Hall?

Washington police spokeswoman Gwendolyn Crump told The Post’s Paul Duggan on Wednesday, “This entire matter is under investigation.”