He might have just been arrested, along with Malvo, at a rest stop on I-70. They were sleeping in a car.
The police wouldn't ID the two men arrested, but it sounds like it was them.
Good news, eh?
Jessee Jackson, Al Sharpton and Johnnie-on-the-Spot call your office: the media is already using terms like "search warrant" and referring to the suspects as "Mr."