"Pulitzer Prize-winning journalist Jose Antonio Vargas, an undocumented immigrant and prominent immigration activist, was detained at an airport in McAllen, Texas, on Tuesday as he was passing through a security checkpoint, rights groups said.
Airport officials in the border city could not confirm that Vargas had been detained but said an unidentified individual was taken into custody at a security checkpoint.
U.S. Border Patrol did not reply to requests seeking comment.
Vargas, 33, posted a picture of himself holding documents on a Facebook page for Define American, an immigration activist group he cofounded, as he was about to go through airport security for a domestic flight.
"The only IDs I have to show security: my Philippine passport and my pocketbook U.S. Constitution and Declaration of Independence, which I keep with me at all times. I don't know what's going to happen," wrote Vargas.
Another photo posted a few minutes later, showed a man identified as Vargas being placed in handcuffs by uniformed personnel.
Vargas was in the Texas border area to report on the plight of Central American children who fled their countries to escape heightened levels of violence, said United We Dream, an immigration activist group for which Vargas was working.
"Once again, the Border Patrol has proven to be a rogue agency after arresting Jose Antonio, a low-priority case for detention and deportation," it said in a statement.
In June 2011, Vargas said he was an undocumented immigrant in an essay in the New York Times Magazine." - Reuters, July 15, 2014.