Police on Friday announced charges against Abdulrahman El Bahnasawy, 19, a Canadian citizen detained in New York; Talha Haroon, also 19, a US citizen based in Pakistan and Russell Salic, 37, from the Philippines.
El Bahnasawy was arrested in May 2016 and pleaded guilty last October to seven terror-related charges. He is awaiting his sentence.
Haroon was arrested in Pakistan in September 2016, while Salic was arrested in the Philippines the following April. Both men are due to be extradited to the US.
"The planned attacks included detonating bombs in Times Square and the New York City subway system and shooting civilians at specific concert venues," a Department of Justice statement said.
The trio hoped to carry out the attacks during the Muslim holy fasting month of Ramadan in 2016, inspired by an attack the previous year on the Bataclan concert hall in Paris and by an attack on the metro in Belgium.
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