Gertrude Lott was sitting at a table and never had a chance to defend herself before she was stabbed to death in her house Thursday morning, Wichita police said Friday.
The 69-year-old woman was stabbed several times "with several instruments" in the torso, Lt. Ken Landwehr said.
He would not say how many different weapons were used. Lott's 22-year-old grandson is being held at the Sedgwick County Jail on suspicion of first-degree murder, Landwehr said.
Officers found Lott on the floor and the suspect sitting on the couch when they arrived at Lott's house at 3101 E. Stadium shortly before 11:45 a.m. Thursday. He had a cut to his neck that investigators think was self-inflicted.
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The suspect had called his father and stepmother earlier that morning and told them to come over to the house where he was staying with Lott and his brother, Landwehr said.
He then attempted to attack them, Landwehr said, but they were not hurt. Police were then notified.
The brother was at class at Wichita State University just east of the house and was not home at the time of the incident, Landwehr said.
Investigators are looking into the suspect's mental state, Landwehr said, but he would not offer any specifics.
Evidence in the case will be presented to the Sedgwick County District Attorney's Office early next week, he said.