2 found dead in Northwest Side apartment

CHICAGO (WLS) -- Two people were found dead in an apartment on Chicago's Northwest Side.

Investigators said an 18-year-old woman and a 50-year-old man were discovered in an apartment building near North Pulaski Road and West Roscoe Street just after 7:35 p.m. Sunday.

The relationship between the two victims is unclear. Authorities said there were no signs of trauma on either body. The victims have not been identified.

Police said they believe the apartment belonged to the man. A death investigation is underway.