Matthew Fox arrested for DUI

"Lost" star Matthew Fox was busted for DUI Friday in Oregon ... TMZ has learned.

Law enforcement sources tell us, Matthew was arrested at 3:23AM on suspicion of driving under the influence. We're told there was a passenger in the car.

Matthew was taken into custody and released later that day.

Details surrounding the arrest are unclear -- but sources tell us, it was alcohol-related. We're told Matthew was en route to a fast food restaurant for some late night eats at the time of his arrest.

Matthew lives in Bend, Oregon with his family. Calls to Matthew's reps were not returned.

Source: TMZ