Camera Phone Ghost Picture

What is in this camera phone photo?

"Hi. My name is Alea from Murrieta, California. I am 14 years old. I was on my way to my dad's work in down town San Diego and as I was passing suicide bridge, I decided to take a picture with my mom's camera phone. I didn't notice anything until later that night when I checked to look at it. In the right side of the picture, it looks as if there is a shady white face..."