The incident raised temperatures on the terraces and the crowd threw plastic bottles atCaf and local officials, accusing them of failing to provide adequate medical cover.
At a symposium of African football Caf staged in the Tunisian capital on Wednesday, Hayatou supporters were distributing caps and T-shirts promoting their favourite's bid.
The Morgan Stanley China A Share Fund (NYSE: CAF) invests at least 80% of its assets in A-shares of Chinese companies listed on the Shanghai and Shenzhen Stock Exchanges.
"Fifa and Caf would like to express their strong displeasure regarding events at Zifa, in particular the court order, which blocked the elections planned for 11 October, " the letter began.