Police say a dispute over water dripping between patios escalated after both neighbors separately approached apartment management.

ALBUQUERQUE, N.M. — A 39-year-old Albuquerque man is accused of killing his 22-year-old upstairs neighbor moments after she went to their apartment leasing office to report that he had confronted and harassed her over water dripping onto his patio, according to police accounts and court-related records.

The July 20 killing of Esmeralda Romero unfolded at the Albuquerque Encore Apartments on Eubank Boulevard after what investigators described as a dispute involving water coming from Romero’s upstairs patio. Police say Michael Cain, who lived below Romero, had complained to an apartment employee about the water before Romero entered the same office with concerns of her own. Investigators allege that Cain waited outside and attacked Romero as she left. He was arrested a short time later and has been ordered to remain in custody while the case moves through court.

The sequence began when Cain went to the leasing office and said water from Romero’s patio was spilling onto his downstairs patio, according to accounts released by Albuquerque police and reported by local news organizations. The employee told Cain that apartment staff would address the matter. Police said Cain later became involved in a verbal confrontation with Romero and returned to the office a second time to complain. The employee again told him the problem would be handled. Investigators say Cain then went back outside rather than returning to his apartment.

Romero subsequently entered the office and gave the employee a different account of what had been happening between the neighbors. Police said she explained that water sometimes dripped from her small dog’s bowl and denied intentionally pouring it onto Cain’s patio. She also told the employee that Cain had gone to her apartment, banged on her door and confronted her about the water. The employee told investigators she was trying to resolve the disagreement and advised Romero to contact apartment security or call 911 if Cain threatened her.

What happened immediately afterward became the central allegation in the homicide case. According to police, the leasing employee said she saw Cain run from the parking lot toward Romero as Romero left the office. Investigators say Cain attacked Romero with a knife and stabbed her repeatedly. The employee described seeing Romero fall and said Cain then turned in her direction while still carrying the knife before passing her and fleeing on foot. Authorities have presented that employee as a direct witness to the attack, and later reporting said video also captured the killing.

Police said Cain discarded a knife after leaving the immediate area. Investigators reported recovering a knife near the location where officers later found him. Cain also called 911 and made statements about having stabbed someone, according to police. Officers located him in an alley near San Jacinto Drive NE and took him into custody. Authorities said he had cuts on one hand and was taken for medical treatment before being booked into the Metropolitan Detention Center. The precise evidentiary significance of the recovered knife, the 911 call and other material will ultimately be tested through the court process.

Cain faces an open count of murder and a tampering-with-evidence charge, according to the Bernalillo County District Attorney’s Office. Law&Crime, citing jail records, also reported an aggravated assault with a deadly weapon count. Public accounts therefore differ on the complete list of charges reflected at various stages of the case. An open count of murder allows prosecutors to pursue the appropriate degree of homicide as the case develops, but the filing of a charge is an accusation and does not establish guilt. Cain is entitled to the presumption of innocence unless he is convicted.

A judge has since ruled that Cain will remain in custody while the case proceeds, the district attorney’s office said in an update on the prosecution. That ruling gives the case a new legal posture beyond the initial arrest and booking. Publicly available reporting reviewed for this article did not establish that a trial date had been set or that a final charging decision had been reached on every possible count. The homicide investigation and prosecution remain active, and further court filings could provide more detail about the evidence investigators say links Cain to Romero’s death.

Romero’s family has begun speaking publicly about the woman at the center of the case, shifting attention from the mechanics of the dispute to the life that was lost. Her mother, Maria Rodriguez, told later local reporting that Romero had called her on July 20 and described an encounter with the downstairs neighbor involving the spilled water. Rodriguez said that was the last conversation she had with her daughter before receiving another call less than an hour later telling her Romero had died. She described Romero as both her daughter and her best friend.

Relatives said Romero had plans that extended far beyond the apartment complex where she was killed. Her family said the 22-year-old was working toward joining the Air Force. Her boyfriend of three years, Jonah Bejarano, remembered her as a loving person whose faith was important to her and who tried to support people close to her. An obituary lists Romero’s full name as Esmeralda Linette Romero and gives her birth date as June 29, 2004. She died only weeks after turning 22.

The contrast between Romero’s plans and the dispute described by investigators has become one of the starkest elements of the case. Police accounts do not describe a longstanding criminal conflict between the two residents. Instead, the documented sequence centers on water passing from one patio to another, repeated complaints to the leasing office and Romero’s report that Cain had come to her door and harassed her. Authorities have not publicly established a broader motive beyond the neighbor dispute described in the investigation, and no finding about Cain’s intent has yet been made by a jury.

The leasing office itself occupies an unusual place in the chronology because both residents turned to the same employee in the minutes leading up to the killing. Cain complained about the water and was told management would handle it. Romero then reported Cain’s conduct and was advised to contact security or police if she felt threatened. Investigators say she was attacked only after walking out of that office. Those facts are likely to remain important as prosecutors present a timeline of the confrontation and the defense examines the circumstances surrounding it.

Currently, Cain is being detained as the judicial process continues. Romero’s family, meanwhile, has used its first extensive public comments to emphasize her relationships, her ambitions and the small personal memories they now associate with her. No verdict has been reached, and the allegations against Cain remain to be resolved in court.

Author note: Last updated August 28, 2026.