HOUSTON -- A woman shot and killed an intruder and accidentally wounded her husband in a northeast Harris County home invasion, investigators told KPRC Local 2 Thursday.

According to deputies, a couple found themselves staring down the barrel of a gun in their apartment in the Northshore Meadows complex in the 300 block of Audrey Lane shortly before midnight.

A man had just broken into their apartment and was making demands.

According to investigators, he wanted cash and drugs, and made the couple remove all their clothing.

Then, gunshots rang out. However, the would-be robber wasn't the one squeezing the trigger, officials said.

"The husband got into a physical altercation with the suspect," Harris County Deputy A.J. Kelly said. "The wife was able to retrieve a handgun that they had up in the room and she fired shots, striking and killing the suspect."

The husband was also shot. Deputies said he was hit in the arm. They believe he may have been hit by friendly fire from his wife.

The couple told investigators that they did not know the man or why they were the targets of a home invasion.

"Seems like, at this point, they did what they had to do," Kelly said. "They were in fear that this individual who broke into their house was going to harm them."

Deputies said they believe the intruder may not have been alone.

"We have a female detained that was in the parking lot at the time of the incident and we're questioning her know," Kelly said. "She's definitely a person of interest. We think she was with him."

According to Kelly, the woman was downstairs in the parking lot waiting in what appeared to be the getaway car.

Investigators said that the husband suffered from an exit wound to the arm.

He was taken to the hospital and is expected to recover.