Migrant on Electronic Monitoring Arrested by ICE During SAFE-T Act Outing

Wilker Gutierrez-Sierra, charged with attempted murder, was taken into custody by immigration agents while exercising his SAFE-T Act rights.

Feb. 11, 2026 at 10:23pm

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A Venezuelan migrant charged with attempted murder for an alleged violent robbery on a CTA train found himself in an ironic predicament - he lost his freedom while exercising the very freedom granted to him under Illinois' SAFE-T Act. Wilker Gutierrez-Sierra, who was on electronic monitoring awaiting trial, was arrested by Immigration and Customs Enforcement agents during one of his 'essential movement' days, a provision of the SAFE-T Act that allows monitored defendants to move freely outside their homes two days per week.

Why it matters

The case highlights the complexities and unintended consequences that can arise from criminal justice reform efforts like the SAFE-T Act, which aimed to provide more freedom for defendants on electronic monitoring but ended up leading to this migrant's arrest by federal immigration authorities.

The details

Gutierrez-Sierra was awaiting trial on charges stemming from a February 2024 attack aboard a Pink Line train, where he and three other Venezuelan migrants allegedly lured a 49-year-old victim to the back of the train, blocked his escape, and stole his phone and $400 after one of the assailants strangled him until he lost consciousness. While the judge rejected prosecutors' request to keep Gutierrez-Sierra in custody, ordering him released on an ankle bracelet instead, the SAFE-T Act provision allowing him to move freely outside his home twice a week ultimately led to his arrest by ICE agents.

  • In February 2024, Gutierrez-Sierra and three other Venezuelan migrants allegedly attacked a man on a CTA Pink Line train.
  • In 2026, Gutierrez-Sierra was on electronic monitoring awaiting trial for the 2024 attack when he was arrested by ICE agents during one of his SAFE-T Act 'essential movement' days.

The players

Wilker Gutierrez-Sierra

A Venezuelan migrant charged with attempted murder for allegedly participating in a violent robbery aboard a CTA train.

Immigration and Customs Enforcement (ICE)

The federal agency that arrested Gutierrez-Sierra during one of his SAFE-T Act 'essential movement' days.

SAFE-T Act

A criminal justice reform law in Illinois that allows defendants on electronic monitoring to move freely outside their homes for up to two days per week.

William Fahy

The judge who ordered Gutierrez-Sierra released on an ankle bracelet, rejecting prosecutors' request to keep him in custody.

Chicago Police Department

The law enforcement agency that took the four Venezuelan migrants, including Gutierrez-Sierra, into custody after the alleged attack on the CTA train.

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What’s next

An arrest warrant for Gutierrez-Sierra remains active in Cook County court records, and the other three migrants charged in the alleged CTA train attack are scheduled for jury trials in April.

The takeaway

This case underscores the need for policymakers to carefully consider potential unintended consequences when implementing criminal justice reforms, as well as the ongoing tensions between federal immigration enforcement and state-level policies aimed at providing more freedom for defendants.