Updated

Four men accused of crafting a terror plot targeting New York City synagogues and upstate military airplanes pleaded not guilty to additional charges in the case.

James Cromitie, Laguerre Payen, David Williams and Onta Williams continue to be held without bail. They appeared Wednesday in a federal court in White Plains.

They were arrested May 20 after an elaborate FBI sting. They face charges including conspiracy and attempting to use weapons of mass destruction. They could face life in prison if convicted.

The men are ex-convicts, and relatives have said they were struggling.

Payen's lawyer says his client is schizophrenic and bipolar. But a prosecutor says Payen is well enough to understand court proceedings.