Matar, from Fairview, N.J., is being held without bond.
Prosecutors say Rushdie was stabbed 10 times.
Police arrested the attacker at the scene and have identified him as Matar.

The scene after an attacker stabbed Salman Rushdie.Joshua Goodman/AP/Shutterstock
His bookThe Satanic Verseswas banned in Iran in 1988, citing its allegedly blasphemous ideology.

Salman Rushdie.Dave Benett/Getty Images