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LANSING, Ill. -- The gold Grand Am of 18-year-old Summer Mitchell, who was shot and killed on Sunday in south suburban Lansing, Ill., was found at 94th and King Drive on Monday night and towed back here to Lansing.

Her boyfriend has yet to be found and her family is asking for him to come forward to be questioned by police.

Authorities were called to an apartment building at 177th St. and Commercial Avenue Sunday morning.

Investigators were still waiting for autopsy results Monday, but Mitchell's relatives said she was shot to death.

Family members said she lived in the building with her boyfriend and that his mother called them Sunday morning, saying something had happened to her.

Summer Mitchell was taking online classes at Kenwood Academy High School in Chicago and was working at a discount store, according to relatives.

They said she was planning to move to Georgia and became a police officer.

Andrew Holmes, an outspoken community leader in Chicago, who is also Summer's uncle, said the ordeal has been difficult for the family.

For their part, Lansing police are being tight lipped about the investigation and have not yet named any suspects or persons of interest in this case.