A sheriff has identified the woman and child found shot to death in their home in an upscale suburban Indianapolis neighborhood.

Boone County Sheriff Mike Nielsen says 31-year-old Katherine Giehll was found shot to death just inside the home in Zionsville and her son, 4-year-old Raymond Peter Giehll IV, was found in a living room where he had been watching television.

Nielsen says he believes a neighbor found the bodies around 8 a.m. Wednesday.

He says authorities are searching for a 61-year-old uncle of the woman who's believed to be armed and dangerous. The man is employed by Wabash College in nearby Crawfordsville. The campus has been placed on lockdown and is being searched. Classes have been canceled there for the rest of the day.