Updated 8:15: 40-year-old Shaun Rangel, who was suspected of shooting his mother in the leg, was found dead in his home by police after nearly five hours of police surrounding the home.
Rangel's body was found shortly after 8 p.m. by SWAT team members who had entered the home, according to Lt. Duane Allen of the Los Angeles County Sheriff's Department.
A homicide investigation is now underway, though the likelihood is that Rangel killed himself, Allen said.
SWAT team members had used gas to fill the house and render Rangel unconcious. They found his body at that point, Allen said.
Detectives do not know when Rangel died yet, but they never were able to establish communications with him after arriving on the scene, he added.
Updated 7:55: Los Angeles Sheriff's Sgt. Cynthia Gonzales identified the suspected shooter as Shaun Rangel, described as being in his 30s, who remained barricaded in a house near Loma Alta Park.
Gonzales also identified the injured woman as Rangel's mother, whom they allege was shot by Rangel in the leg after she asked that he move out of the house.
Rangel's mother and two other family members reportedly ran out of the house after she was shot, got into her red car and drove away as Rangel continued to fire at her. The mother drove the car a couple of blocks below the house, where it remains with what appear to be bullet holes visible (see image above), the sheriff's department said.
The mother and the family members got out of her car and sought help, the sheriff's department said. Her condition remains unknown.
Rangel then went back inside the house and locked himself in.
Negotiators were on scene and trying to talk Rangel into surrendering.
Sheriff's deputies do not believe the shooting is related to
Updated 5:30 p.m. KABC-7 reports that a man shot a woman in a home in Altadena and then barricaded himself inside with a long rifle and other weapons.
The victim was alive at the hospital, but her condition was not known. The relationship between the suspect and the woman is unclear.
Previously: A shooting occurred in Altadena before 3 p.m. in the 3200 block of North Lincoln Avenue near .
According to initial scanner reports, a long rifle was used in the shooting. There is at least one gunshot victim, according to deputies. The gender of the victim was not revealed previously, but according to scanner reports the person shot is a woman.
The shooting victim has been taken to a nearby hospital in unknown condition, according to LA County Sheriff's spokesman Mike Parker. A Crisis Negotiation Team is on scene trying to convince the suspect to surrender himself. An LASD Swat Team is also on scene.
The suspect is believed to still be at the location, barricaded in a home at the location.
Authorities describe the shooting suspect as a male Hispanic, around 5 feet 8 inches, shaved head, wearing a white tank top, hoodie and blue jean shorts. The suspect reportedly also sports skull tattoos on both legs.
Authorities are working to evacuate people near the crime scene and have reportedly blocked off east and west traffic on West Altadena Drive at Lincoln Avenue and at Palm and Dabney streets.
A family was having a birthday barbecue in Loma Alta Park, but were quickly evacuated from the area.
Deputies from the Sheriff's Altadena Station, Temple Station, including the California Highway Patrol and reportedly some Pasadena Police units are on scene coordinating the containment area and traffic control.
Editor's note: The original version of this story identified Mr. Rangel as 'Shawn Rangel' rather than 'Shaun Rangel' based on information received by the police. The County Coroner's office has identified him as "Shaun Rangel."