The Estefans are not expected to attend the LA ceremony

The anger at Cuban artists attending the show is just as strong among the hard-line anti-communist Cuban American groups in Los Angeles, as in Miami.

Ceremony

Among those nominated for awards are Christina Aguilera, Ricky Martin and Juanes.

Top Latin American music stars Gloria and Emilio Estefan have reportedly said they will not attend the ceremony after it was moved from Miami.

Gloria Estefan presented awards and performed at last year's show.

Juan Vila, spokesman for Junta Patriotica Cubana, a national Cuban American organization, said: "We sincerely regret the Latin Grammy awards ceremony has become an instrument for the benefit of the Castro-communist regime in Cuba."

Christina Aguilera has received two nominations

In a letter to Latin Grammys chief Michael Greene, the group claimed profits from the sale of records by Cuban government sympathisers went towards continued the slavery of the Cuban people.

The rally organisers are already talking with the police in Los Angeles, who expect things to be under control.

Sparks

LA Cuban American leaders have said there will be hundreds rather than thousands demonstrating outside the ceremony.

Police officers said they had a "game plan" in case trouble erupted.

Mr Vila warned sparks could fly if expected hard-line Castro supporters turned out at the venue on the night.

The last-minute move of the show from Miami came after Academy bosses learnt that about 100 anti-Fidel Catro groups were given permission to protest.

Michael Greene was not available to comment on the latest announcement by protesters.

Earlier he has tried to distance the awards from the anti-Castro protests.

"While we support everyone's right to express individual views, our mission is to celebrate excellence in all recorded Latin music, regardless of who produces it.," he said.

An estimated $35m (�22.6m) was expected to flood into the Miami economy through hosting the ceremony, the second Latin Grammys to be held.

Cuban artists and bands nominated for for Latin Grammy awards are planning to attend the September 11 gala.

They include jazz pianist Chucho Valdes, pop artist Andres Alen and salsa singer Isaac Delgado.