DUBLIN (AP) — The International Rugby Board will appeal what it regards as a lenient one-week ban issued to New Zealand flanker Adam Thomson for "stamping or trampling" on the head of Scottish counterpart Alasdair Strokosch.

The IRB said on Wednesday it "will appeal what it strongly believes to be an unduly lenient sanction."

Thomson was yellow-carded for the second-half incident at Murrayfield on Nov. 11, then cited. Six Nations-appointed judicial officer Jean Noel Couraud upheld the citing, and forced Thomson to miss last week's test against Italy in Rome.

Strokosch, who was stuck at the bottom of a ruck when Thomson placed a boot on his helmeted head, didn't believe there was any malicious intent.

However, the IRB disagreed with the length of ban "for this particular act of foul play and (it was) not aligned with the sanctions handed down in similar cases. The IRB firmly believes it is in the best interests of the game and its integrity to exercise its ability to appeal the Thomson decision."

A hearing date was yet to be decided. New Zealand plays Wales this weekend and finishes its tour against England next week.