The immigration action followed the arrest of a Nicaraguan man accused of killing his roommate during an Aug. 2 confrontation.
HALLANDALE BEACH, Fla. — A Florida roommate killing that began as a local police investigation now involves two separate government systems after federal immigration authorities placed a detainer on the 27-year-old man jailed on a first-degree murder charge.
U.S. Immigration and Customs Enforcement lodged the detainer for Edy Jose Rivas-Rizo with the Broward County Jail on Aug. 3, according to the Department of Homeland Security. The federal action came one day after Hallandale Beach police arrested Rivas-Rizo in the death of his roommate at the Sea Esta Mobile Home Park. A detainer is a request tied to federal immigration custody if a person otherwise becomes eligible for release; it does not decide whether the person committed the state crime and does not substitute for the murder prosecution pending in Florida.
DHS publicly announced the immigration action on Aug. 11, identifying Rivas-Rizo as a Nicaraguan national. The department said he entered the United States through California in April 2022, was apprehended by U.S. Border Patrol and was subsequently released into the country. Federal officials used the announcement to criticize immigration decisions made by the Biden administration. Those claims concern Rivas-Rizo’s immigration history and federal policy, however, while the question of criminal responsibility for his roommate’s death is governed by the evidence collected by Hallandale Beach police and the Florida court process.
The state case began on Aug. 2 when officers responded at about 1:15 p.m. to reports of a stabbing in the 300 block of Sea Esta Lane. Police found the victim on the ground with a serious wound and arranged for him to be transported to HCA Florida Aventura Hospital. He was later pronounced dead. Authorities have not identified the victim in the public reports reviewed for this story; his name was redacted from the arrest report obtained by local media. Officers were told the suspected attacker lived in the same mobile home park and went to the residence to locate him.
Police said Rivas-Rizo came outside when officers ordered him to do so. Investigators reported seeing blood on him and a substantial cut to his right hand, which was treated at a hospital. The arrest itself followed a broader investigation that included surveillance footage, statements from two witnesses and a warranted search of the home Rivas-Rizo shared with the victim. Taken together, those sources gave detectives multiple accounts of the same episode, including Rivas-Rizo’s own explanation — an explanation police said changed after they showed him video of the confrontation.
According to investigators, surveillance footage showed the victim trying to get away while Rivas-Rizo followed him carrying a large machete-style knife. Police said the recording showed an attack with the weapon and then a struggle between the two men on the ground. Two witnesses intervened, separated them and removed the machete. The recording is especially significant because Rivas-Rizo initially told police a different version of events. Authorities said he denied chasing his roommate until investigators showed him the footage, after which he acknowledged the pursuit.
Rivas-Rizo told detectives that the confrontation began when the victim came from his room, struck him near the eye and threatened him while armed, police said. He said he was afraid for his life. Investigators reported that he claimed the victim had been holding the machete and that the fatal injury happened when the man accidentally fell onto its blade. After being confronted with the recording, however, police said Rivas-Rizo changed part of his account and told them that although he had chased the victim, he intended to hit him with the broad side of the blade rather than its cutting edge.
Those statements are allegations described by police and have not been resolved through a trial. Rivas-Rizo is presumed innocent unless prosecutors prove the murder charge beyond a reasonable doubt. The sources reviewed for this story do not include a substantive public response from a defense attorney addressing the surveillance video or explaining how the defense intends to reconcile Rivas-Rizo’s statements to investigators. They also do not establish the motive behind the confrontation. Police reporting has not supplied a verified reason for the dispute between the roommates.
Witnesses gave police information about what happened after the struggle. One remained with the wounded victim, who investigators said walked about 15 yards before collapsing. That witness told officers that the victim gestured toward Rivas-Rizo and said, “That guy just killed me.” Another witness, who police said lived with both men, accompanied Rivas-Rizo toward the residence. He told investigators he had seen Rivas-Rizo leave the home and pursue the victim and later saw him return with the machete and put it somewhere inside, according to the arrest report.
Investigators obtained a search warrant for the residence and reported finding a large amount of blood. Police also recovered the machete from a storage area at the back of the home and said blood appeared to be on its handle. Public reports on the case have not provided completed forensic testing results from the weapon, so any conclusions about DNA or fingerprints would go beyond the available evidence. The weapon’s recovery is nonetheless part of the physical evidence investigators cited alongside the video and witness statements in developing the murder case.
The immigration detainer does not alter those evidentiary questions. Instead, it creates a possible second custody process if Rivas-Rizo is ever ordered released from local criminal detention. In general terms, an ICE detainer tells a jail that federal immigration authorities want notice before release and seek an opportunity to assume custody. DHS said it lodged that request with Broward County the day after the killing. Whether and when it would take practical effect depends on developments in the state case and local custody status. The sources reviewed do not indicate that the Florida murder allegation has been resolved.
The distinction is important because DHS’s later announcement used forceful political language about Rivas-Rizo and the former administration’s border policy. Such statements reflect the department’s policy position and are not a criminal verdict. Florida prosecutors must still prove the charged homicide under state law using admissible evidence. Rivas-Rizo may challenge witness accounts, police conclusions, his own statements or other parts of the prosecution case. Immigration authorities, meanwhile, operate under a separate body of federal law concerned with whether the government may take him into immigration custody.
The federal announcement nevertheless changed the public framing of the case. Initial reports focused closely on the events at the mobile home park: a dispute between roommates, a pursuit captured on video, intervention by witnesses, an injured man’s collapse and the discovery of a weapon. Nine days later, DHS highlighted Rivas-Rizo’s nationality and immigration history. Both developments are part of the public record, but they answer different questions. The homicide investigation concerns who is criminally responsible for the victim’s death; the ICE action concerns what federal authorities intend to do if Rivas-Rizo becomes available for immigration custody.
Rivas-Rizo was reported held without bond at the Broward County jail following his arrest. The sources reviewed through Sept. 9 did not identify a final disposition of the first-degree murder allegation, leaving the criminal charge pending in the available public reporting. Unless that custody status changes, the ICE detainer remains a secondary issue to the state prosecution, where the surveillance footage, the witnesses who intervened and Rivas-Rizo’s statements to police are central to the allegations he must answer.
Author note: Last updated September 9, 2026.