MINNEAPOLIS — A woman who became suspicious and called 911 after dropping her son off at a suburban Minneapolis day care provider’s home stayed on the line as she went back, entered the house and discovered three people had been shot to death, according to transcripts of the call released Wednesday.

The Brooklyn Park Police Department released the transcript of the call made Monday in the minutes after investigators believe a lone male fatally shot DeLois Brown and her elderly parents. The transcript provides a chilling account of how the mother became suspicious after seeing a male in a hooded sweat shirt and a glove on one hand on a bicycle outside of Brown’s home.

She told police she called Brown to warn her but spoke to her only briefly before she heard the word “no” and the phone went dead. When she turned around and returned to the house, she spotted the male riding away with something under his coat. Her alarm grew as she told the dispatcher that her son was inside and that the door was open.

Police were still searching Wednesday for the lone suspect in the shooting deaths of Brown, 59; and her parents, James Bolden, 82, and Clover Bolden, 81. The Hennepin County Medical Examiner said Wednesday that all three victims died of gunshot wounds, and that Brown and her mother had been shot in the head.

The caller stayed on the phone with the 911 dispatcher while she went inside to see if Brown, her son and the others were OK. She quickly found her son, who was uninjured, but she couldn’t find the day care provider right away. She called out to Brown repeatedly, her voice imbued suddenly with horror as she came upon Brown and her parents in a bedroom.