A single male suspect is being sought in the Saturday morning armed bank robbery at Chase Bank, 66 Main St. in Hobart.

Hobart Police Capt. James M. Gonzales said a witness told police the man entered the bank about 11:25 a.m. and gave the teller a note and displayed a pistol, tucked in his waistband. The teller gave the man, who wore a black mask, baseball cap and hoodie, an undisclosed amount of cash, police said.

The man fled east across Main Street to a silver-colored Jeep SUV parked in a dry cleaners lot.

The FBI is heading the investigation along with Hobart and Lake County police.

If anyone has any information on the identity of this suspect, please contact Lt. Nicholas Wardrip at 219-942-3406 or @ nwardrip@cityofhobart.org

The robbery came one day after two men ambushed and killed a 55-year-old security guard during a robbery at First Midwest Bank, 1975 W. Ridge Road in Calumet Township. Both suspects wore black clothing and hooded sweatshirts. Police arrested one man Friday as a search continued for the second suspect.

The security guard was identified by the Lake County coroner’s office as Richard Castellana of Tinley Park, Illinois. He was a retired Cook County Sheriff’s officer.

Carole Carlson is a freelance reporter for the Post-Tribune.