Granit Xhaka and Xherdan Shaqiri face potential two-match bans for their goal celebrations in Friday's win by Switzerland over Serbia.

FIFA is investigating whether they broke rules on political messages.

Both players are ethnic Albanians from Kosovo, where a Serbian crackdown on the Albanian population only ended with Nato military intervention in 1999.

If FIFA's case is upheld, then the players would miss the last Group E game against Costa Rica and the last-16 match if Switzerland qualify.