A mother, father and their 7-year-old son were found shot to death Wednesday at a home in a northwest Chicago suburb, police said.

A relative found a 47-year-old woman unresponsive in the Roselle home and called authorities. Police found the other two bodies, that of a 60-year-old man and the boy, Roselle Police Sgt. John Lawson said.

The relative checked the home because the woman failed to show up for a medical appointment. Authorities have not released the victims' identities. The Cook County medical examiner's office planned autopsies on Thursday.

A handgun was recovered at the home, Lawson said, but there were no signs of forced entry. The woman's body was found in the second-floor master bedroom while the man and boy were found in a separate second-floor bedroom, he said.

Police said they don't believe a suspect is at large or that the public is in danger.

Neighbor Mary Salat said the adult male victim was a motorcycle enthusiast and she described him as involved with his son, taking him sledding and to the local swimming pool.

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