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DALLAS (CBSDFW.COM) – GOP front-runner Donald Trump tweeted tonight that former Mayor of Dallas Tom Leppert has endorsed him.

In other Trump news, the secret service said it is investigating after a violent encounter between an agent and a Time Magazine photographer at a rally for the brash business man in Virginia.

The photographer said he was trying to leave the media area when the agent began choking him, throwing him to the ground. A bystander tweeted a video that shows the photographer jump up and  put his left hand around the agent’s neck briefly before he’s escorted out.

Despite the drama, the photographer said he won’t press charges.

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