GEORGETOWN, Delaware (AP) – A pediatrician charged with sexually abusing his patients likely attacked more than 100 children at an office he had decked out with a merry-go-round and a ferris wheel, a state official said Wednesday.

The volume of evidence seized from Dr. Earl Bradley's practice and home, including video tapes and computer files, makes it difficult to estimate the number of victims, said Alexis Slutsky, a deputy attorney general assigned to the state's Child Predator Task Force.

"I'm comfortable in saying probably well over 100 potential victims," she said at a news conference with Attorney General Beau Biden and other law enforcement officials.

Slutsky said the investigation is focusing on cases between 1998 and the present.

Bradley, 56, was arrested last week and is being held in prison on $2.9-million bond. He has been charged with 33 felony counts relating to seven victims. A preliminary hearing Wednesday was postponed until Jan. 14. His attorney, Eugene Maurer, did not immediately return a call seeking comment.

Stacy Cohee, a deputy attorney general, said Bradley was not brought to the courthouse for Wednesday's hearing because corrections officials are "concerned about his mental state right now," adding that there were concerns he is suicidal.

The case has shocked the close-knit community of Lewes, a town of about 3,100 on the Delaware coast. The case is even more chilling because some alleged victims are no more than 6 months old.

Bradley's office was known for its many toys and the rides he had in front. On Wednesday, the deserted office looked more like a small run-down carnival than a pediatric office, including a small merry-go-round and Ferris wheel. A pink sign in front of one building read: "Princess Parking only. All others will be toad."