Last Updated Aug 25, 2014 2:47 AM EDT
LOS ANGELES -- A person of interest in a series of shootings that killed three people and injured four in the span of an hour in the northern suburbs of Los Angeles was taken into custody following a standoff, police said.
The person was detained Sunday night by SWAT officers after holing himself up in a house in Sylmar for about an hour, Capt. William Hayes said.
Hays declined to say what led officers to the house or whether any evidence was found inside.
CBS Los Angeles reports the person was taken into custody without incident, then taken to a hospital The man was taken to the hospital for treatment of what police called "minor injuries."
Witnesses had reported seeing two men in a tan- or gold-colored SUV at two of the three crime scenes in the San Fernando Valley area.
"I can't tell you whether there was a second individual, we're following all clues and leads at this time," he said late Sunday.
Police said the victims appeared to be randomly targeted by the same gunmen because the same type of weapon was used in the morning attacks and the suspect shot at victims from inside a car.
In the first attack, a family of five riding in a car to attend church was struck by gunfire at 5:50 a.m. in San Fernando. The family had pulled over after noticing the suspect driving erratically when they were shot, Sgt. Frank Preciado, a police spokesman, said.
A woman in her 20s was killed, her mother and father were critically wounded and two children sustained minor injuries from either bullet fragments or broken glass, Preciado said.
About 40 minutes later, a man was fatally shot at a Sylmar park.
Then 15 minutes later and less than 5 miles away, a woman in her late 50s who was sitting in a parked car by a church was shot in the head. Preciado said she may have been waiting for someone, but he didn't have more details.
The shootings triggered an intense investigation and prompted the Los Angeles Police Department and Los Angeles County Sheriff's Department to step up patrols on the street.
"It's a major threat," Sgt. Frank Preciado said.
He urged people to be vigilant until the suspects are apprehended.
"If you see someone that matches that description or their vehicle matches that description, then go off to an adjacent street," he said. "Get away."
Investigators were looking into whether Sunday's attacks were related to at least two shootings earlier in the week, Preciado said.