A pilot flew a small plane from Florida into Cuban airspace and dropped anti-communism pamphlets on Havana today, Customs officials said.

A Customs Service radar center in Long Beach, Calif., tracked the single-engine plane once it left U.S. airspace after departing Tamiami Airport in Miami, said spokesman Michael Sheehan.

"His reason for going down was to drop leaflets, anti-communist leaflets in multiple languages," Sheehan said.

While the man was flying the rented plane over Havana, the Cuban government sent two MiG fighter jets to monitor his flight until he left Cuban airspace, Sheehan said. The MiGs took no action.

The aircraft returned to Tamiami Airport about four hours after it left, and Customs officials detained the pilot, Ly Tong, 51, of New Orleans, for questioning.

Sheehan said no charges would immediately be filed against Tong, an American citizen who arrived from Vietnam in 1984.

"We are investigating to determine if any laws or regulations have been violated," said Kathleen Bergen, spokeswoman for the Federal Aviation Administration in Atlanta.

Tong, a self-proclaimed "freedom fighter," told a television station he wants the Cuban people to revolt against Cuban President Fidel Castro.

"The most important thing is to try to encourage the Cuban people to rise up and overthrow the Havana pirate," Tong said. He added that he wants to make similar flights over China and North Korea.

"Anywhere there is no justice, no freedom, I will come there," he said.

The green paper pamphlets found scattered in some Havana neighborhoods called on Cubans to launch a general strike against the communist government and to seize radio and television stations.

The pamphlets were signed: "Commander in Chief of the Revolutionary Anti-Communist Forces of the World," followed by an illegible signature.

There was no immediate response from Cuba's government to the incident.