FIFA have relaxed their recently-imposed ban on World Cup qualifiers being played above 2,500m and have imposed a new limit of 3,000m.

It follows protests from the South American confederation but the new limit will still prohibit matches being played in the Bolivian capital La Paz.

The new 3,000m (9,840ft) limit means Ecuador is no longer affected by the ruling but parts of Bolivia and Peru still are.

Chavez said: "Something smells very bad in the South American Football Confederation (Conmebol) because of this decision.

"I don't understand why FIFA got to this decision if the 10 Conmebol members agreed to back our position against the ban."

FIFA president Sepp Blatter announced on Wednesday that the issue would be studied by a special conference in October.

The three-day conference will look at playing in all extremes including altitude, heat, cold and humidity.

Blatter said: "We are doing this for the protection of the players.

"It is exclusive to qualifying matches for the World Cup and does not concern national or continental competitions within South America."