Law enforcement officers have arrested an illegal immigrant accused of killing four adults and a child in a Southeast Texas home.

Montgomery County Sheriff Rand Henderson says 38-year-old Francisco Oropesa was arrested "without incident."

“We would like to thank all local, state, and federal agencies who collaborated in this effort," the department noted in a news release.

San Jacinto County D.A. Todd Dillon says Oropesa was arrested in Cut and Shoot, a town in eastern Montgomery County.

He's been taken to the Montgomery County Jail and is charged with first-degree murder, he said.

Oropesa is suspected of killing five of his neighbors late Friday night in San Jacinto County, including a 9-year-old boy, with an AR-style rifle after the family confronted him about firing rounds in his yard, saying it would wake up their baby. The baby's mother and 9-year-old brother were among the five people killed, who were all originally from Honduras.

Police had used drones and scent-tracking dogs during the wide search for Oropesa that included combing a heavily wooded forest a few miles from the scene.

San Jacinto County Sheriff Greg Capers said Oropesa had fled the scene after the attack that also left four adults dead. He said his deputies had been called to the suspect’s house at least one other time previously over shooting rounds in his yard.

Ahead of Oropesa's arrest, the FBI displayed photos of the suspect on billboards across the Houston area and offered an $80,000 reward for information about him.