Four American citizens are missing after being assaulted and kidnapped from a vehicle by unidentified armed men in Mexico, the FBI said in a statement.
The Americans came under gunfire from the men shortly after crossing the border on Friday through the city of Matamoros, in the Tamaulipas state, across from Brownsville, Texas, the FBI announced Sunday.
The victims crossed into Mexico driving a white minivan with North Carolina license plates, the FBI said. Shortly after, the gunmen fired upon the passengers in the vehicle, and the four Americans were placed in another vehicle and taken from the scene by the men.
Law enforcement has not released the names of those who they said were kidnapped.
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It was not immediately known why the Americans entered the country.
$50,000 reward being offered in case
The FBI is seeking the public’s assistance in identifying those responsible for the assault and kidnapping and is offering a reward of $50,000 for the return of the victims and the arrest of those involved.
The FBI, federal partners, and Mexican law enforcement agencies are investigating, officials said.
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The U.S. State Department has issued a “Level 4: Do Not Travel” advisory for US citizens in Tamaulipas, citing crime and kidnapping there.
Anyone with information about the case is asked to call FBI San Antonio Division or submit a tip online.
Natalie Neysa Alund covers trending news for USA TODAY. Reach her at firstname.lastname@example.org and follow her on Twitter @nataliealund.