Robert Yachen Lee appeared briefly in Superior Court in Alhambra on Friday afternoon.

Lee allegedly lured the employee to a storage room above O My Yogurt on South Atlantic Boulevard early Wednesday, knocked her unconscious and then -- after removing her clothing and dressing her in an adult diaper -- placed her in a box, authorities said.

The victim told authorities that when she came to, she was bound with tape and had a collar around her neck.

Prosecutors believe Lee planned the kidnapping because the storage room had recently been soundproofed.

The woman was able to free herself and escape to a nearby optometrist's office, where she alerted police.