Some immigrants are worried that routine check-ins with immigration authorities are making them more vulnerable to being detained, as President Donald Trump and his administration ramp up arrests and deportations throughout the country.

This week, a 30-year-old Venezuelan immigrant who had been periodically checking in with Immigration and Customs Enforcement in South Florida — as part of a process to remain in the U.S. — was unexpectedly detained during a routine appointment, his mother told NBC Miami.

The mother, whose name is being withheld to protect her son, said he was asked to show up at an immigration supervision office in Delray Beach on Monday afternoon to follow up on his immigration application and “fix something … and that was a lie,” she said.

The mother said she waited five hours for her son to finish his appointment but instead, she saw him being escorted out by immigration officers.

Her son has lived in the U.S. since he was 6 years old, she said, and despite reporting to his appointment, he was not given a fair chance to fight a deportation order placed against him.

“They didn’t give us the opportunity to at least tell us, ‘Look, you have a deportation order, we want you to be removed by February or something,’” the mother said.

On any given year, thousands of undocumented immigrants across the country regularly report to ICE. These routine appointments help immigration officials keep track of those who are not a priority for deportation as immigrants seek legal alternatives to remain in the U.S.

Immigration officials also have in place additional supervision programs that allow them to keep tabs on undocumented people through GPS ankle monitors, by phone and other types of monitoring. According to ICE, there are nearly 179,000 people being monitored through these programs nationwide.

Two New York-based immigration attorneys whose names are being withheld to protect their clients said they started noticing a shift after Trump was elected president in November. People in the state who have long been enrolled in one of these immigration supervision programs, or have been checking in with ICE once or twice a year, were asked to report sooner and, in dozens of cases since, they said, their clients ended up being detained and deported.

The ICE Field Office in New York City did not comment and referred NBC News to ICE’s national office, which did not immediately respond.