The 2011 Manhattan terrorism plot was a conspiracy by two Muslim Arab-Americans to bomb various targets in New York City, United States. According to authorities, Ahmed Ferhani and Mohamed Mamdouh planned to attack an unspecified synagogue, possibly a church, and the Empire State Building. Law enforcement arrested the two suspects in a sting operation on May 11, 2011. The plot was motivated primarily by "hatred of infidels and anti-semitism," according to the authorities.
In December 2012, Ferhani pleaded guilty to terrorism conspiracy and terrorism-related weapons possession charges and was sentenced to 10 years in state prison. Mamdouh pleaded guilty and was sentenced to 5 years in state prison in April 2013.