Last Updated Feb 9, 2017 3:10 PM EST

PHOENIX — An immigrant mother who was granted leniency under the Obama administration has been deported to Mexico in a sign of how President Trump will carry through on his campaign promises on immigration.

The lawyer for Guadalupe Garcia de Rayos and an immigrant advocacy group say they learned from Mexican diplomats in the U.S. that she had been taken back to Mexico.

The Phoenix mother was in the country illegally and checked in Wednesday for what she thought was a routine meeting with Immigration, Customs and Enforcement officials. They then moved to deport her, prompting protests.

“She’s always there for me. No one should ever have to go through this,” her 16-year-old son Angel told CBS affiliate KPHO-TV.

Seven people were arrested after they blocked ICE vans from leaving a Phoenix location.

The protesters said Garcia de Rayos was in one of the vehicles, which were used to transport people in ICE custody to detention centers, or to Arizona’s border with Mexico for deportation. An Arizona Republic photo identified a woman looking through one of the vehicle windows covered by security screening as Garcia de Rayos.

Police, meanwhile, took positions around the building and confronted some of the demonstrators, many who chanted “Justice!”

Police posted on Twitter that they arrested about seven protesters, but added that the demonstration was mainly peaceful.

“Besides the few people engaged in criminal acts, most people out here are peaceful and exercising their rights properly,” police said. “Everyone remains safe so far. Hoping for continued cooperation and no more criminal conduct.”

By 1 a.m. Thursday, less than two dozen protesters stood in the dark outside the building talking quietly, with just a handful of police looking on.

The protesters said they initially succeeded in stopping the vehicles from leaving, but said they later left the grounds by another exit. They didn’t know if Garcia de Rayos had still been aboard.

Her arrest came just days after the Trump administration broadened regulations under which some people will be deported.

“We’re living in a new era now, an era of war on immigrants,” Rayos’ lawyer, Ray A. Ybarra Maldonado, told the New York Times after leaving the immigration building.

Puente Arizona, an immigrant advocacy group, said Garcia de Rayos came to the U.S. as a 14-year-old and now has two children. She was arrested on Wednesday while reporting to ICE, an annual requirement.

Her status with the agency wasn’t immediately clear late Wednesday. The Republic carried a statement from ICE officials, which said only that she was detained because of her prior conviction.

Phoenix station KTAR reported that she was arrested in 2008 during a workplace raid and was later convicted of identity theft for possessing false papers.

Despite her conviction, she was allowed to live in Arizona and checked in with ICE officials every six months.

© 2017 CBS Interactive Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.



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