NEW YORK, June 29 (Reuters) - Four men were indicted by a federal grand jury in Brooklyn on Friday for an alleged plot to blow up New York's John F. Kennedy International Airport.

Russell Defreitas, Kareem Ibrahim, Abdul Kadir and Abdel Nur will face a total of six charges, including conspiracy to attack a mass transportation facility, conspiracy to destroy a public building by explosion and conspiracy to destroy international airport facilities, according to the indictment.

Prosecutors said the plotters sought to blow up the airport's jet fuel tanks and part of the 40-mile (64-km) pipeline feeding them from New Jersey.

Defreitas, 63, a U.S. citizen and native of Guyana who was arrested in New York, will enter his plea at an arraignment scheduled for July 11. Officials said he was a former airport employee who headed the plot and conducted surveillance for the group.

Ibrahim of Trinidad and Guyanese nationals Kadir and Nur are scheduled to appear at a bail hearing on Monday in Trinidad after they were previously denied bail there.

The men sought the help of Jamaat Al Muslimeen, an Islamist extremist group in Trinidad that was behind a 1990 coup attempt on the island, authorities said when the plot was announced early this month.

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