American-born jailhouse converts to Islam hell bent on blowing up two Bronx synagogues and shooting down a military plane have been arrested following a massive, year-long investigation, sources told the NY Post.

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Investigators say the four, described as Black Muslims from the Bronx, had planned to place bombs at various targets. But New York city police and federal agents got wind of the plot and kept the men under careful surveillance.

Two years ago, two Muslims pleaded guilty to plotting to attack synagogues in Los Angeles. But officials said that they knew of no connection between those arrests and this latest plot in New York.