A death investigation is underway after a man and woman were found dead inside an Avondale home on the city’s Northwest Side Tuesday night.

Police were called to the 3300 block of North Central Park Avenue about 9:15 p.m. to do a well-being check after their neighbors told police they were concerned for their safety.

Officers got inside the home through a back door and found a 66-year-old woman and a 70-year-old man dead, police said. There were no evidence of trauma.

Area 5 detectives are investigating.