3 mysterious lights snapped in Westminster, California

On December 22, 2017, a witness caught a picture of SpaceX launch in Westminster, California. He noticed three weird lights on the image. So, he tried to take another one but UFO was gone.

Witness statement:

Me and my son were going into the mall and noticed the spacex launch so I was taking a picture of the trail and that’s when I noticed the three lights in the right hand side of the picture a couple seconds went by and when I went to take another one it was gone please tell me what you think.