ATLANTA -- Three Atlanta police officers were shot and wounded and an elderly woman killed at a house in northwest Atlanta Tuesday night.

The woman, identified by relatives as 92-year old Kathryn Johnston, opened fire on the officers from the narcotics division at a house at 933 Neal Street, according to officials.

Atlanta Police Asst. Chief Alan Dreher said at a news conference Wednesday that an undercover officer made a drug purchase at Johnston’s address late Tuesday afternoon from a male suspect. Officers were able to obtain a search warrant after that.

Asst. Chief Dreher said as they were executing the search warrant, the officers announced themselves and then forced open the door. Officials say the warrant was a “No Knock” warrant – meaning that the officers did not knock before forcing open the door, but they did announce themselves.

Dreher said as soon as the officers forced open the door, Johnston shot at the officers and the officers returned fire to protect themselves. One officer was shot 3 times – once in the leg, on the side of the face and once in his bulletproof vest. One officer was hit in the leg and another hit in their arm. All officers are on paid administrative leave pending an investigation – as is common.

Officials say they have not made any arrests in the case and they have not located the male suspect. Dreher said suspected narcotics were recovered from the home but they are awaiting lab results to confirm the items are drugs.

Dreher said a marked patrol vehicle was parked in front of the residence and the word “Police” was written across the front and back of the narcotics team’s vests. He also said only a matter of minutes passed between when officers arrived on the scene and when they forced open the door.

Asst. Chief Dreher referred to the incident as a, “tragic and unfortunate incident.”

The woman's niece, Sarah Dozier, says that she bought her aunt a gun to protect herself. Relatives believe Johnston was frightened by the officers and opened fire.

Her relatives say Johnston had lived in the house for about 17 years.

"They kicked her door down talking about drugs, there's no drugs in that house. And they realize now, they've got the wrong house," Dozier said. "I'm mad as hell." Officials say they had the correct house and that the warrant they had was legal.

She says the officers "shot her down like a dog."

Police say the investigation is continuing.