A frantic father desperately searched for his son in the aftermath of the unthinkable movie theater massacre yesterday.

Tom Sullivan yelled, “Find my son!” while showing a photocopied photograph to witnesses and media gathered at a high school near the Aurora, Colo., cineplex.

Alex Sullivan, 27, attended the movie to celebrate his birthday.

Shortly before the carnage, he tweeted, “oh man one hour till the movie and its going to be the best BIRTHDAY ever.”

Sullivan, who is married and works at a local Red Robin burger joint, was later confirmed dead.