San Antonio police found Erica Martinez shot inside a home. She was 48 years old. It happened early Sunday. She was in the 11200 block of Sutton Place. That block sits near Prue Road on the city's Northwest Side.

An argument inside that home turned deadly. It happened in minutes. Now two people are dead. Police still do not know who pulled the trigger. This case leaves hard questions unanswered. How fast can an argument with a gun in the house turn deadly? This case shows how fast.

Officers got to the home about 2 a.m. Sunday. Police said Martinez had been shot several times. She died at the scene.

Police said Martinez and a 23-year-old man were arguing inside the home. Witnesses told police they heard shots during the argument. Police said the man was shot too. He was hit in the torso, that is the chest and stomach area. Medics rushed him to a hospital.

On Monday, police gave an update. They said the man died at the hospital. Police used the word "injuries" to describe how he died.

Police have not shared the man's name. They have not said who fired the shots. Police do not know who shot who in both deaths. That part of the case is still open.

The Bexar County Medical Examiner's Office is also on the case. This office checks bodies to learn how and why people died. The office told KSAT on Monday it has no answer yet. It has not found the cause of death for Martinez. It has not found the cause of death for the man either.

Cases like this are hard for police to close. The only two people who know the full story are both dead. Police must build the truth from clues. They also use what witnesses heard. They cannot ask either person what happened that night.

An argument that turns deadly is one of the toughest calls police get. There is no one left standing who can say for sure how it started or who fired first.

San Antonio's Northwest Side is a busy part of the city. It keeps growing every year. Families live there. Workers live there too. Streets like Sutton Place are usually quiet. A shooting like this leaves the community wanting fast answers.

The Medical Examiner's Office plays a big role in cases like this. Doctors there decide how a death gets marked on the record. They can rule a death a homicide. They can rule it something else. That work is not done yet. It is not done for Martinez. It is not done for the man either.

San Antonio police say the case is still open. The Medical Examiner's Office is still working too. Both offices need to share more facts. Until they do, the public will not know for sure what happened. No one knows for sure who fired the shots. Two people are dead after an argument inside one home.

El Tejano covers crime cases across South Texas. San Antonio sits at the edge of that beat. Cases on the Northwest Side matter to families across the region, not just the block where they happen.

If an argument in your home ever turns scary, help is out there. The National Domestic Violence Hotline is free. It is open all day and all night. The number is 1-800-799-7233.

El Tejano will update this story. New facts will come from police. New facts will come from the Medical Examiner's Office too.