Two incidents happened at gas stations in Brighton Park, at 6 a.m. and 8:09 a.m. Sunday in the 3400-block of South California Avenue.
Police said the armed suspect walked up to people as they pumped gas and demanded their property.
Then in at about 9:37 a.m. Sunday in the 2200-block of West 37th Street in McKinley Park, police said the thief crashed into the victim's car, then pulled a gun when the victim asked for the suspect's insurance information.
Anyone with information is asked to contact Area One Detectives at (312) 747-8384.
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