Blue bright UFO spotted over Los Angeles, CA

On March 13, 2015, a witness took photos of Los Angeles (California) from a highest point when he has seen a mysterious blue light moving in nocturnal sky.

Witness statement:

I was taking pictures of Los Angeles from the highest point of Signal Hill.
I saw this green blue dot behind an Airliner coming from LAX.
I took three pictures and the object moved toward LAX.
I didn't look anything like a plane. More like a fuzzy blue green hazy dot.
The blue dot is visible to the left and above the LA sky line in the pictures.