Manchester United boss Sir Alex Ferguson and his assistant Carlos Queiroz have been charged with improper conduct by the Football Association.

The charges relate to comments made following United's FA Cup defeat to Portsmouth last month.

Ferguson's charge concerns comments about referee Martin Atkinson and Professional Game Match Officials (PGMO) general manager Keith Hackett.

Queiroz's charge relates to comments about Atkinson. Both parties have until April 17 to respond to the charge