UPDATEThe actor has been found, and has issued an apology.
Orlando Brown of TV's That's So Raven has been missing since early Tuesday morning, PEOPLE has learned exclusively.
The 20-year-old reportedly left his manager's house around 10:20 a.m. to make a quick trip to 7-Eleven and has not been seen since. According to Brown's publicist, Elayne Rivers, he had a full day of meetings and appointments in preparation for a photo shoot Wednesday.
Rivers adds that friends and family are very concerned, as the young actor is not one to be out of touch for long, and the convenience store was within a short walking distance from his manager's home in Studio City.
Brown has several projects in the works, including a second album featuring tracks with top artists Akon and Sean Kingston.
Anyone who might have any information should contact Elayne Rivers at TLToonz@aol.com.