Four people, including a minor, were dead and two suspects were in custody in a series of seemingly random late-night shootings on the streets of southeast Los Angeles County, authorities said.

The attacks took place overnight Sunday and Monday along a dense industrial and residential swath of the county, from Cudahy to Bell to Huntington Park, with a fifth victim also described as a juvenile who was stable at a hospital, authorities said at a news conference.

Two suspects are affiliated with a gang, according to authorities, but sheriff’s Capt. Andrew Meyer did not answer when he was asked whether he believes the attacks were part of a gang initiation ritual. An additional person may have also been involved.

Huntington Park Police Chief Cosme Lozano said the victim in his city was a known homeless person.

“We are confident these are random acts of violence,” he said. “Our victim is a known local homeless individual in our community. We know he was simply walking down the street and was randomly targeted.”

The attacks started around 10:30 p.m. in the city of Bell when authorities responding to a report of gunfire found a man wounded and a second uninjured, Meyer said.

The first man was pronounced dead at the scene, he said.

Just after midnight, in a community just outside Los Angeles on Florence Avenue, another gunfire report led deputies to a parking lot, where they found a man with gunshot wounds who ultimately was pronounced dead at the scene, Meyer said.

About 12 minutes later, yet another gunfire report in Cudahy sent deputies to the area, where they found two boys who had been struck. One was pronounced dead at the scene, and the other was stabilized at a hospital, Meyer said.

Just before 2 a.m. Monday, a Huntington Park police officer on patrol discovered a man down in the street, Meyer said. The man was declared dead at the scene, he said.

Meyer named none of the victims.

The Los Angeles County Sheriff’s Department took command, said Meyer, the captain of the sheriff’s Homicide Bureau. Security camera video appeared to show a Honda Pilot SUV at or near each scene, he said.

San Bernardino County sheriff’s deputies on patrol Monday afternoon came across a Pilot with a matching plate number, stopped it and took a person into custody, Meyer said.

Los Angeles detectives quickly took custody of the man, identified as Gary Jonathan Garcia, 42. Meyer said he had an “extensive criminal history.”

Another suspect was captured in Compton on Monday night with the help of SWAT team members, Meyer said. He was identified as Wayne McNeely Timberland, 20. He has no criminal history, Meyer said.

It was not clear which suspect, if either, is believed to have opened fire, Meyer said.

Both Garcia and Timberland, along with a third person wanted in connection with the attacks but not identified by name, are affiliated with a gang, he said.

Some of the Los Angeles gangs that have expanded across the region and country have roots southeast of downtown. Police did not name the specific gang the suspects are believed to belong to out of concern for public safety.

Meyer said a case would be forwarded to prosecutors for consideration of possible charges later this week. For now, both suspects were booked on suspicion of murder, he said.

“There was no indication that they knew any of the victims,” Meyer said.

Janice Hahn, the elected county supervisor who represents the region, praised the sheriff’s department for nabbing suspects so soon after the crimes.

“I think it put everybody on edge,” she said at the news conference. “I’m so grateful to stand here today.”

This article was originally published on NBCNews.com