Eliseo Calderon, 54, of Waukegan.

A Waukegan man has been charged with sexually assaulting at least five young girls between the age of 5 and 8 in the early 2000s, police announced on Thursday.

Eliseo Calderon, 54, of Waukegan, was charged with four counts of predatory criminal sexual assault of a child.

The Waukegan Police Department launched an investigation on May 4 into a possible sexual assault investigation based off an anonymous complaint.

Waukegan Police Cmdr. Joe Florip said that the complaint centered on Calderon as a possible suspect and detectives from the department’s Criminal Investigation’s Division began investigating the incident immediately.

During the investigation, detectives located five female victims who were 5 to 8 years old at the time of the offense. Detectives believe the crimes occurred between 2000-2006 in Waukegan, Florip said.

Based on the investigation, Calderon was arrested on Tuesday. He was charged and transported to bond court on Wednesday.

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Calderon remains held in the Lake County Jail on a $1 million bond. He is scheduled to appear in court again on June 24.

Detectives are asking anyone with information on Calderon or those who believe they may be a victim of the man to contact Detective Tim Ives at 847-599-2678.