Sanjuan Reyes, 36, of Round Lake Beach, was bitten by Lake County Sheriff’s Canine Dax after allegedly refusing to surrender following a track in Round Lake Beach Saturday morning. | Provided Photos

A judge denied release for a Round Lake Beach man who said “I thought I killed her” after being surprised to learn his girlfriend, who he allegedly critically injured in an attack, was still alive following his arrest.

Lake County Sheriff’s Office Deputy Chief Christopher Covelli said Sanjuan Reyes, 36, of Round Lake Beach, drove to a relative’s home in Joliet early Saturday morning.

Reyes was covered in blood and intoxicated and left the home shortly after arriving.

His family became concerned that he may have killed a woman that he lives with in Round Lake Beach, Covelli said.

The family called the Joliet Police Department who then notified the Round Lake Beach Police Department.

Police responded to Reyes’ residence but did not locate anyone.

They developed information Reyes might have been in the area of Route 83 and Rollins Road in Round Lake Beach.

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Officers located Reyes’ vehicle in a parking lot and found it had a significant amount of blood inside of it, Covelli said.

Covelli said it was learned that Reyes attacked the woman, whom he resides with, at a location in Waukegan before driving to Joliet.

Lake County Assistant State’s Attorney Dino Katris said the victim knocked at the door of a random home in Gurnee seeking help.

Paramedics were called and transported the 39-year-old woman to Advocate Condell Medical Center in Libertyville.

She was admitted to the intensive care unit due to multiple fractures and a brain bleed. She had ligature marks on her neck, according to a police report.

The victim also had bruising and swelling to her face and neck.

The woman and Reyes are in a dating relationship, Katris said.

The woman, who was fearful and scared, spoke to officers and told them Reyes was drunk, punched her multiple times and then strangled her.

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Witnesses saw Reyes force the woman into his car. Reyes threatened to shoot the witnesses, Katris said.

Lake County Sheriff’s Canine Dax responded around 5:50 a.m. Saturday to the scene near Route 83 and Rollins Road to conduct a track following the discovery of the abandoned vehicle.

Dax tracked for approximately a half-mile and located Reyes hiding in a thick bush line.

Covelli said Reyes refused to surrender and Dax bit him. Reyes struck Dax during the apprehension, Covelli said.

Dax was evaluated by his veterinarian and determined to be uninjured.

Reyes was charged with aggravated domestic battery, aggravated battery, two counts of domestic battery, striking a police animal and resisting arrest.

Reyes said “I thought I killed her” after officers arrested him, Katris said.

Prosecutors filed a petition to detain him pre-trial and a hearing was held.

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Lake County Judge Theodore Potkonjak granted the petition on Tuesday and ordered Reyes held in the Lake County Jail.

“There is nothing but detention that can protect the public from this gentleman,” the judge said after giving his ruling.

Reyes is scheduled to appear in court again next Tuesday for a status hearing.