CARY - Police seized a fired round, prescription medication and a laptop computer from the Morrisville home of woman who was fatally shot by an officer Saturday, according to a search warrant made public today at the Wake County Clerk of Court's office.

Police think the woman, Aishakya Santhranakrishna, 28, of 2414 Kudrow Lane may have stabbed her mother, Rajalakshmi Canniputhur, 15 to 18 times with a butcher knife before the officer fired.

The incident occurred early Saturday evening outside the Preston Creekside condominiums off Morrisville-Carpenter Road.

Stacie Galloway, a Morrisville town spokeswoman, said four shots were fired. Agents with the SBI and the City-County Bureau of Identification recovered one round fired from the officer’s gun that went through the window of the slain woman’s home and into the residence, court records show. The agents did not disclose where they found the bullet.

The agents also seized four prescription bottles that held medicines used to treating fungal infections, motion sickness, allergies, fevers and pain, according to the search warrant.

One of the drugs, promethazine, with the brand name Phenergan, is in the same class of anti-psychotic drugs as Thorazine and Stelazine, although it is not clinically used an an anti-psychotic, according to a medical Web site, www.medicinenet.com. It acts as an antihistamine, a sedative and an anti-nausea drug.

Morrisville Police Chief Ira Jones said Santhranakrishna's husband, Karpik Dev Ashok Jayararama, told police that she was under stress because of a new job but had no history of mental illness and wasn't taking any medications he knew of.

The SBI has taken over the investigation, which is standard procedure when an officer is involved in a shooting. SBI officials could not be reached for comment this afternoon.

Officers initially responded to a report of a fight that had started inside the condominium, then spilled outside. They said they saw the daughter stabbing and swinging the knife at her mother.

An officer repeatedly ordered the woman to stop before firing at Santhranakrishna, whose name is also spelled in police reports as Canniputur-Santhrana Krishna.

Police have not said why the woman stabbed her mother, nor have they released the name of the officer involved in the shooting.

The officer, described by Jones as a newcomer to the force, has been placed on administrative duty pending the SBI investigation.