Authorities confirmed the body of his mother was found in a ditch Wednesday

By Tara Fowler
May 08, 2015 11:15 AM
Omaha Police

Omaha, Nebraska, police have made an arrest in the death of 45-year-old Jesus “Ismenia” Marinero.

Her son, Roberto C. Martinez-Marinero, 25, was taken into custody on Thursday evening and booked for first-degree murder and use of a deadly weapon to commit a felony after he “walked into the Douglas County Department of Corrections, where he advised staff that he was involved in the death of his mother,” police said.

Authorities are still searching for Jesus’ 5-year-old son Josue Ramirez-Marinero, who’s been missing since Wednesday. Though police have not located the child, they said Friday they have reason to suspect Josue was thrown into the Elkhorn River.

“The Omaha Police Department is currently conducting a multi-agency ground, water, and air search of this area,” police said in a statement.

The boy’s younger brother, 11-month-old Angel Ramirez-Marinero, was found abandoned in a dumpster outside their family’s apartment complex in La Vista, Nebraska, on Wednesday. He was unharmed.

Jesus’ body was discovered in a ditch north of Lauritzen Gardens that same day. Police were able to make a positive ID on the body Thursday through fingerprint records, Omaha police tell PEOPLE. The case is now officially a homicide.

The whereabouts of Angel’s or Josue’s father are unknown.

Authorities canceled an Amber Alert – which requires a vehicle description to be activated – for Josue on Thursday after they discovered the car the boy was believed to be traveling in. The vehicle had two empty car seats, but there was no sign of the 5-year-old. But officials emphasized Friday that the search for the child is still on.

“We are continuing to investigate and search for him,” Lt. Darci Tierney said in a statement Friday. Josue has short black hair and was last seen wearing a gray shirt and gray sweatpants.

Anyone with information on the homicide of Jesus Marinero or the whereabouts of the child is asked to contact the Omaha Police Department at 402-444-5656 or Crime Stoppers. A $25,000 reward is available for tip(s) leading to the arrest(s) for the homicide of Jesus Marinero.

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