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WILMINGTON, Del. (CBS) — Wilmington police are asking for the public’s help catching a man who allegedly stole a dog while posing as an animal control worker.

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Police say on Dec. 23, a man was walking his three dogs when a loose pit bull began attacking the dogs. The 65-year-old man was unable to stop the attack, which left one of his dogs dead.

The other two ran off with their leashes attached to them.

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The man called 911 and later, two men and a woman arrived at the scene, claiming to be from animal control. The pictured man took possession of the attacking pit bull and fled without obtaining any information from the man.

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Credit: Wilmington Police

If anyone has information regarding the identity of the subject, call Wilmington Police at (302) 654-5151.

Police are also searching for a dog that ran from the fray.

Credit: Wilmington Police

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The owner is offering a $1,000 reward for the puppy’s return. The other dog made it home safely.