Four men have been arrested over alleged plots to attack targets in New York, US prosecutors say, BBC reported.
The men were planning to blow up a Jewish synagogue in the Riverdale area of the Bronx, the district attorney said in a statement.
They were also plotting to shoot down military aircraft at Stewart Airport, in Newburgh to the north of the city.
The group intended to use Stinger surface-to-air missiles to bring the planes down, the statement said.
The men were arrested after buying inactive missiles and inert explosives in an FBI sting operation.
"The defendants wanted to engage in terrorist attacks," said Lev Dassin, acting US attorney for the Southern District of New York.
"They selected targets and sought the weapons necessary to carry out their plans."
According to prosecutors, the men planned to detonate a car packed with plastic explosives outside the Riverdale synagogue.
They also intended to target military planes at the New York Air National Guard base at Stewart Airport, 60 miles (85 km) north of New York City.
The arrests were the result of a year-long investigation, officials said.