She was reported missing by her son, after she failed to board a plane to Toronto to visit him.
Patel was last seen on Thursday around 4 p.m.
Police say Patel is originally from India and has a medium brown complexion, brown eyes and a thin build.
Anyone who has seen Patel or who may have information on her whereabouts is encouraged to call the Cary Police Department at (919) 469-4012.
