Chelsea striker Diego Costa has pulled out of the Spain squad with a hamstring injury.
He was substituted with 15 minutes remaining during Sunday's 3-2 win at Hull and Spain on Tuesday announced that he would return to the Premier League club for treatment during the international break.
A statement on Spain's official website read: "Diego Costa, left the premises of the Spanish Football Federation this morning after undergoing several tests with the medical services of the RFEF.
"The striker has suffered a level 1 hamstring tear on the biceps femoris of the left thigh, which was previously already noted by the medical services of his club."
The statement continued: "Diego Costa will return to Chelsea FC where he will undergo the corresponding medical treatment."