Roberto Martinez-Marinero : Man admits role in mom’s death, 5-year-old missing

Roberto Martinez-Marinero : Man admits role in mom's death; 5-year-old missing

Roberto Martinez-Marinero turned himself in to police who fear he may have thrown his mother’s five-year-old son into a nearby river.

The body of 45-year-old Jesus Ismenia Marinero was found Wednesday night. Hours earlier, her 11-month-old son was found alive, wearing only a diaper, in a dumpster near a suburban Omaha apartment complex. Other than some bruises, the infant was uninjured.

Police said investigators have reason to believe Marinero’s missing 5-year-old son, Josue Ramirez-Marinero, was thrown into the Elkhorn River and were searching the waterway Friday.

Roberto Martinez-Marinero was arrested Thursday night after walking into the Douglas County Department of Corrections and telling jail staff that he was involved in the death of his mother, police said. The news release did not explain how he was involved.

Martinez-Marinero was taken to Omaha Police Headquarters and interviewed by homicide detectives, police said. He has been arrested on suspicion of first-degree murder and a weapons count in the death of his mother.

He could face additional charges, police said.

“At this point in the investigation, there are no other suspects being sought by the Omaha Police Department,” the news release said.

An Amber alert was issued Thursday for Josue, but cancelled later in the day after the vehicle that police were looking for was found. Even though Josue was not found inside the vehicle and the boy was believed to be in danger, police said Amber alert rules require a definitive description of a vehicle involved in missing child cases.

The Omaha home where Jesus Ismenia Marinero and the two younger boys had lived burned down two weeks ago. Omaha news outlets said the family moved in with a relative after the fire.