"Samuel's behaviour was unacceptable and the player will now be subject to an internal disciplinary hearing on top of serving a six-game ban," read a Leeds statement.

"Leeds United will make no further comment at this time."

Saiz issued his own statement at the same time, saying: "I would like to take this opportunity to sincerely apologise to the players, staff and supporters of Leeds United for my behaviour in yesterday's game at Newport County AFC.

"I would also like to apologise to Newport County AFC and Robbie Willmott for my actions.

"I accept the punishment handed to me by the FA.

"My actions are inexcusable, I give my word to all those connected to Leeds United Football Club that I will learn from this situation and never repeat it.

"I am grateful for the support I receive from our fans and I understand that I am a role model to the next generation of Leeds supporters, I will ensure that my behaviour moving forward reflects that."

Referee Mike Dean showed Saiz a straight red card, just moments after Shawn McCoulsky's headed winner for Newport, and later confirmed that the Spaniard had been sent off for spitting.

UEFA's rulebook punishes spitting with a mandatory six-game ban and the FA announced Saiz's suspension on their official website on Monday morning.

Saiz, 26. will be sidelined until the Sky Bet Championship fixture at Derby on February 20, missing six league games as Leeds bid to maintain their play-off challenge.

It is not the first time that Saiz has been involved in a spitting row since joining Leeds from Huesca last summer.

Port Vale manager Michael Brown said Saiz spat at his defender Joe Davis during a Carabao Cup tie in August.

But the FA did not bring any charges against the Spaniard on that occasion.