Dark Knight: Shooter is PhD Student

A 1pm update on the Colorado shooter.

The suspected "lone-wolf" shooter of the Batman movie theater massacre in Aurora, Colo., earlier today has been identified as Ph.D. student James Holmes, who recently withdrew from his neuroscience studies at the University of Colorado before shooting up "The Dark Knight Rises" screening.

Holmes, 24, moved to Aurora to pursue his Ph.D. at the University of Colorado medical center, living just blocks from the hospital in an apartment that is now laced with explosives and being searched by HazMat teams. 

A San Diego woman identifying herself as James Holmes's mother spoke briefly with ABC News this morning.

She had awoken unaware of the news of the shooting and had not been contacted by authorities. She immediately expressed concern that her son may have been involved.

"You have the right person," she said.