COLLEGE STATION, Texas The gunman who killed two people and wounded four others was apparently angry about being evicted from his house, but police are still trying to determine if that was his only motive.

Brazos County Precinct One Constable Brian Bachmann, 41,showed up to serve the eviction noticeat 211 Fidelitynear Highland. He was gunned down in the front yard.

The gunman, 35-year-old Thomas Caffall,also killed43-year-old Chris Northcliff, the home's landlord.

EXCLUSIVE: Cell phone video captures shootout

Caffall then opened fire on other officers who responded to the scenewounding three of them. Barbara Holdsworth, of Houston, was critically wounded by bullets asshe drove by the scene.

An individual was inside the addressand began taking fire on the officers.The officers defended themselves and called in additional officers. Additional officers responded and began trying to handle the situation as best as possible, said Asst. Chief Scott McCollum, of the College Station Police Department.

Photos: Deadly shootout near Texas A&M

The shootout with the suspect lasted for an extended period of time, the chief said.

Chuck Ross, wholives nearby, said he heard as many as 40 gunshots.

I heard two bullets whiz right by my room... and I just threw myself out of bed and said, 'I don't think I should be by my window right, now, Ross said.

Click here to hear from other witnesses

Officers who rushed to the shooting scenetried to save Bachmann.

Several of the officers that were responding began CPR on the constable and he was transported to a local hospital, McCollum said. Brian Bachmann was very close to everyone in law enforcement. He was a pillar in this community and it's sad and tragic that we lost him today.

A College Station police officer Justin Oehlke was shot in the leg and was taken to the hospital in stable condition, McCollum said. Officer Brad Smith was treated for shrapnel wounds and released. Officer Phil Dorsett was also injured by gun shrapnel and was treated at the scene.

It is a tragedy. Our thoughts and prayers go out to the families of those involved and we will do our best to conduct a very thorough and accurate investigation to try and determine exactly why this occurred and provide some answers to the public, McCollum said.

McCollum said Caffall had no prior arrest reord.

An attorney for thesuspect's familyreleased a statement on the shooting Monday evening:

Linda Weaver, mother of Tres [Thomas] Caffall, asked me (Tyler Moore, family attorney) to forward this release to you in behalf of her family relating to the terrible shooting in College Station today. Our family was shocked and devastated by the tragedy this afternoon. Our thoughts and prayers go to the families of the deceased and the wounded victims. We mourn them and the loss of Tres. He had been ill. It breaks our hearts his illness led to this. Please respect our privacy in our grief.

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