A police report says 38-year-old Victor Eras was taking pictures of the singer Thursday when Lambert started running toward him "in an aggressive manner."
Eras claims Lambert grabbed his back pack and wrestled him to the ground. The photographer did not suffer any injuries. He declined to comment to The Associated Press on Friday.
No arrests were made. A police spokesman says there will not be an investigation. The state attorney's office will review the report and decide if any charges will be filed. TMZ first reported the alleged attack.
Lambert's publicist did not immediately return a call seeking comment.