ST. CHARLES – A woman who used a Colorado resident's Social Security number for employment purposes in St. Charles was charged this week with aggravated identity theft, St. Charles Police Department spokesperson Paul McCurtain said.

The 65-year-old Lakewood, Colo., resident discovered the fraud when she ran a check on her Social Security number, McCurtain said.

Authorities reportedly traced the number to AJR Enterprises at 3635 Swenson Ave. in St. Charles. Lakewood police then contacted the St. Charles Police Department.

St. Charles police detectives reportedly conducted a follow-up investigation on Wednesday at the business, where they also interviewed Isabel Lopez.

Lopez, 42, of the 700 block of West Brown Street, West Chicago, was charged with aggravated identity theft, a Class 1 felony because the victim was older than 60, McCurtain said. He said Class 1 felonies carry a minimum punishment of four years in the Department of Corrections.

Lopez was transferred into the custody of Immigration and Customs Enforcement after posting 10 percent of her $50,000 bail at the Kane County Correctional Facility, police said.