Montrell Lewis, 20, of Zion.

Police arrested a 20-year-old convicted felon, who is on probation, after finding him in possession of a handgun illegally modified into an automatic weapon in Zion.

Officers with the Zion Police Department midnight shift conducted a traffic stop around 4:20 a.m. Thursday.

Officers conducted the stop on a vehicle that was associated with several stolen vehicles throughout the area, police officials said.

A passenger, identified as Montrell E. Lewis, 20, of Zion, was arrested after officers found a gun.

Lewis was in possession of a 9mm Glock handgun that had an auto sear installed, police said.

The driver of the vehicle was cited for traffic violations while Lewis was charged with four counts of aggravated unlawful use of a weapon, a Class 2 felony.

Lewis appeared in bond court on Thursday and a Lake County judge ordered him held on a $500,000 bond.

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Court records show Lewis was convicted in March of aggravated unlawful use of a weapon after being found with a gun in Waukegan earlier this year.

Lewis was sentenced to 136 days in jail and 30 months of probation. He also received 68 days of credit for time served.

As of Sunday, Lewis remains held in the Lake County Jail in his latest case and would need to post $50,000 cash in order to be released.

He is scheduled to appear in court again on Friday for a status of attorney hearing.