Border agent shooting reward

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TUCSON, Ariz. -- The U.S. government Wednesday offered a $5 million reward in the search for the gunmen in Mexico who ambushed two ICE agents.

In addition, the gornment of Mexico has offered a reward.

But even with that sizable sum it's tough to get information when the suspects belong to a brutal drug cartel.

Six weeks after an attack on two ice agents working in Mexico, the U.S. government is offering a $5 million reward for leads.

The goal is to track down the gunmen who killed agent Jaime Zapata and wounded agent Victor Avila.

"That I think will provide a little bit more response," said Mayra Contreras of the U.S. Marshal's Service.

Rewards often generate tips that lead U.S. Marshal's deputies like Mayra Contreras to wanted criminals.

But on the border or in Mexico, fear can keep people from coming forward, especially when the suspects are members of a violent drug cartel.