Police in the Caribbean state of Trinidad are searching for a fourth man charged with plotting to blow up New York's John F Kennedy Airport.

The man, Abdel Nur, is believed to be at large on the island.

Three other suspects are in custody, accused of conspiring to blow up fuel tanks and pipelines serving the airport, one of the world's busiest.

The suspects include a former cargo worker and an ex-MP for the South American nation of Guyana.