Two federal law enforcement officials confirm to CNN's Susan Candiotti that federal prosecutors are expected to announce a grand juryindictment against a key al-Qaeda operative, Adnan Shukrijumah, on several terrorism-related charges in connection with a thwarted terror plot to bomb the New York Subway system.

The indictment is expected to be formally announced by the Justice Department late Wednesday afternoon. The case is based out of the Eastern District of New York.

Shukrijumah has alluded authorities and remains at large with an up to five-million dollar reward for information directly leading to his capture.