HOUSTON -- A pregnant woman was shot and killed while calling 911 in her southeast Harris County home Wednesday, officials told KPRC Local 2.

Police said Sherry Arnold was in the house in the 9900 block of Sageroyal at Blackhawk Boulevard when she apparently called 911 shortly after 1 a.m. Dispatchers heard a gunshot on the call before the line went dead and sent deputies.

"There was a disturbance and you could hear a gunshot that had gone off," said Sgt. James Parker of the Harris County Sheriff's Office.

When officers arrived, they found Arnold shot in the head. She died a short time later.

Arnold was three months pregnant.

Neighbors said they saw Arnold arguing with her husband, 46-year-old Howard Holmes, outside their home Tuesday.

"I think he would drink and he would get drunk and they would just argue about different things," neighbor Arlene Rittmel said.

"The next-door neighbors have said that they argued a little bit -- that they could hear them arguing through the house," neighbor Thomas Sweeney said.

Holmes was taken into custody and charged with one count of murder. Deputies said he would not be charged in the death of the unborn child due to the pregnancy being in its early stages.

Holmes does not have any record of violence, officials said.

Two rifles were found inside the home and taken as evidence, officials said.

The couple was married two months ago.

"She was very nurturing. She had a lot of pets, so she was always real loving. So I think she was real excited to have a baby," neighbor Shirley Trovence said.

Both were medics in the Army reserves.

Arnold was expected to report to Iraq in early 2006.