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HAMMOND — Witness statements and the city's Blue Net license plate reader system helped police track down a person of interest about an hour after a shooting Tuesday at a gas station, an official said.

The 28-year-old Griffith man was arrested about 5 p.m. Tuesday in South Holland, Lt. Steven Kellogg said.

He's a person of interest in a shooting about 3:50 p.m. at the Citgo gas station at 169th Street and Indianapolis Boulevard, police said.

A 28-year-old Griffith woman was inside a vehicle with a child when she was shot, police said. The child was not wounded.

The woman was taken to a local hospital. Updated information about the woman's condition was not available Wednesday morning.

Investigators think the shooting was related to a domestic dispute, police said.

The case remained under investigation Wednesday, Kellogg said.

If the Lake County prosecutor's office charges the man, he would face extradition proceedings in Illinois before facing a Lake Criminal Court judge.