Benjamin Hintt, age 7, and Sebastian Hintt, age 5, were both found dead inside a Belvidere home last weekend. | Family provided photo

A Huntley man is in custody and police recovered evidence from his McHenry County residence in connection to the murders of two children and an adult in Boone County.

The Belvidere Police Department said they initiated an investigation into a triple homicide in the 600 block of Union Avenue in Belvidere Sunday evening.

Andrew Hintt and his two sons, Benjamin and Sebastian Hintt, ages 7 and 5 respectively, were located dead inside the residence, police said.

The Boone County Coroner’s Office ruled the three deaths as a homicide on Tuesday.

During the investigation, detectives learned that Alize Q. Smith, 24, of Huntley, was with Hintt and the two boys on Sunday morning.

The U.S. Marshals Service Great Lakes Regional Fugitive Task Force took Alize into custody on Tuesday in the 11000 block of Timer Drive in Huntley on an Illinois Department of Corrections parole violation warrant.

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Police detectives interviewed Alize at the Belvidere Police Department.

The Belvidere Police Department holds a press conference on Monday to provide details on a triple homicide that occurred Sunday in the 600 block of Union Avenue in Belvidere. | Screengrab

He was transported to the Boone County Adult Detention Center on the warrant and is being held without bond.

Records show that Smith was paroled in June from the Illinois Department of Corrections after serving time in prison for armed robberies in McHenry County.

The Huntley Police Department, U.S. Marshals Service and Belvidere Police Department later on Tuesday executed a search warrant at a residence where Alize was arrested in the 11000 block of Timer Drive in Huntley.

Detectives seized several pieces of evidence from the home.

The investigation is ongoing and Belvidere police are asking the public for any information on the incident, which they called a “horrific tragedy.”

Those with information are encouraged to contact the Belvidere Police Department at 815-544-2135.

Anonymous reports can be made by calling Boone County CrimeStoppers at 815-547-7867 or visiting www.boonecountycrimestoppers.com.

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Those who provide information leading to an arrest could be eligible for a cash reward.