​Two people are dead and six others were injured in a shooting in west Houston Sunday, according to the Houston Police Department.

The motive behind the shooting is unknown at this time.

One of the deceased is a suspect who was shot by a SWAT officer. The other is a citizen who was shot and killed inside a vehicle, police said.

According to authorities, the civilian was in his 50s and was a customer at an auto detail shop where the suspect shot him with a pistol. Police say the suspect was also armed with an AR-15 that was used to shoot at officers.

Photos: 2 dead after active shooting situation in west Houston

A second suspect was wounded in the shootout and was taken to the hospital in critical condition. Authorities say he was armed with at least one weapon, but it is unclear what his role in the shooting may have been at this time.

Three civilians – two men and one woman -- were among the wounded and were taken to local hospitals. Police say their injuries are not life-threatening.

Watch: Two men, one woman recovering in hospital after west Houston shooting

Two officers were also wounded. One was shot in the hand and is expected to be OK. The other was shot in the chest, but officers say his bullet-proof vest saved his life. Officials say they are both out of the hospital as of Sunday evening.

Watch: HPD PIO John Cannon provides update on west Houston shooting

Police say the first officer who pulled up to the scene was immediately shot at, leaving 21 bullet holes in his windshield.

An HPD helicopter also had five bullet strikes. Police believe the deceased suspect shot at HPD’s helicopter and that officer.

Police said reports of a third suspect were false.

Officials say the neighborhood is now secure and the shelter-in-place has been lifted.

Watch: Witnesses describe active shooting scene Sunday in west Houston

The active shooter situation was initially reported at Memorial and Wilcrest drives Sunday morning. Officials, however, are urging residents to avoid the area on Memorial Drive near Wilcrest where the active shooter situation was initially reported, as the investigation is ongoing.

Watch: HPD Chief Montalvo gives update on active shooter situation in west Houston

SWAT, Houston Police, Houston Fire Department and Precinct 5 deputies rushed to the scene just after 10 a.m. Sunday. Houston Fire Department officials say a fire that broke out at a nearby gas station may have resulted from the suspect shooting and striking several gas pumps.

KHOU 11 reporter Marcelino Benito was on the scene and spoke with witnesses who said they were shot at by one of the shooters.

Check back here for more updates on this developing story as they become available.