Sister’s boyfriend faces murder charge after brother challenges him inside family home

Alvin James Smith acknowledged firing the fatal shot but told investigators he acted after DeMarcus Gibson-Beard struck him and his girlfriend.

ST. PAUL, Minn. — Alvin James Smith’s criminal case does not begin with a dispute over who fired the gun. According to prosecutors, Smith acknowledged firing the shot that killed DeMarcus Gibson-Beard. The central conflict in the early record is why he fired and whether the circumstances support his claim that he was protecting himself and his girlfriend.

Ramsey County prosecutors charged Smith, 20, with one count of second-degree intentional murder after Gibson-Beard, 27, died Aug. 29. Minnesota’s intentional second-degree murder statute covers a killing committed with intent to cause death but without premeditation and carries a maximum possible sentence of 40 years after conviction. The state has not accused Smith in the filed count of planning Gibson-Beard’s death in advance. Instead, the probable-cause allegations focus on a rapidly escalating family confrontation, the decision to obtain and conceal a gun, the shooting itself and Smith’s conduct afterward.

That legal framing is important because the confrontation involved physical aggression that is described differently by the people who witnessed it. Smith said Gibson-Beard struck him and Smith’s girlfriend before the gunfire. The girlfriend, who was Gibson-Beard’s sister, also told police that her brother assaulted Smith and punched her in the head. Gibson-Beard’s mother denied that he hit his sister, however, and investigators said they did not see visible injuries on the woman’s face or head. Gibson-Beard’s fiancée said he rushed Smith and threw a punch that failed to connect before the shot.

The criminal complaint traces the conflict to Gibson-Beard’s arrival at his mother’s home with his fiancée and a television. Gibson-Beard asked Smith to help carry the television from the vehicle into the residence. His fiancée told investigators Smith appeared to view that request as disrespectful. The disagreement expanded into complaints about Smith’s living situation. Smith was staying at the home with Gibson-Beard’s sister, and Gibson-Beard criticized him for living there without paying bills, according to witnesses.

The housing argument gave the confrontation a history that predated Aug. 29. Gibson-Beard’s mother told police that she had repeatedly asked her daughter and Smith to leave her residence. She said they had refused, creating continuing tension. Smith later told investigators that Gibson-Beard complained about his presence in the home and used a derogatory term while speaking to him and his girlfriend. By the accounts gathered in the complaint, both sides therefore connected the argument to unresolved resentment over the couple’s living arrangement, even though they differed on how the physical encounter unfolded.

Smith told investigators he considered Gibson-Beard threatening and went with his girlfriend to the bedroom they shared. While there, he concealed a handgun beneath his arm for protection, according to the complaint. He then returned to the area where the confrontation was continuing. That sequence is significant to the state’s accusation because it places Smith’s acquisition of the weapon before the fatal shot. It does not, by itself, decide whether his later use of the gun was criminal or legally justified. That question depends on facts and legal standards that had not been resolved in the initial public record.

Gibson-Beard’s mother said she tried to keep her son back but that Smith continued approaching him. His fiancée said the dispute moved inside and that family members attempted to separate the men. She described Gibson-Beard rushing Smith and throwing a punch that did not land. She then heard one pop and saw smoke near Gibson-Beard before he fell. Smith’s girlfriend also described hearing a single gunshot. Police were called to the Park Street home at about 11:48 a.m. and found Gibson-Beard on the living room floor with a gunshot wound.

Smith gave police a more direct description of the instant he fired. He said Gibson-Beard reached around his sister, struck Smith and also struck the woman, according to the complaint. Smith told investigators he drew the handgun, operated its slide and fired. He also made a statement indicating that he knew where he had aimed. Prosecutors included those words in the probable-cause allegations supporting the intentional-murder charge. Because they are statements attributed to a defendant during an investigation, they may become subjects of evidentiary or contextual arguments as the case proceeds.

Gibson-Beard was taken to a hospital but did not survive. The Ramsey County Medical Examiner ruled his death a homicide. That classification describes a death caused by another person and is separate from the legal judgment of whether a homicide constitutes murder, another criminal offense or a legally justified act. Smith has not been convicted, and his self-defense account remains an allegation that must be evaluated through the criminal process rather than accepted or rejected solely on the basis of the charging document.

Smith’s actions after the shooting also feature prominently in prosecutors’ account. Authorities say he left the home with the firearm, went to a wooded area and hid beneath a vehicle. He called a friend and a cousin and told them that he had killed someone, according to the complaint. His girlfriend later contacted him. During that conversation, Smith said he did not want to go to jail, described the handgun as illegal and expressed thoughts of suicide. Officers and the girlfriend eventually persuaded him to return to the residence.

When Smith came back, police took him into custody and said a handgun without a serial number was in his waistband. He told officers during the arrest that he had used the weapon because Gibson-Beard had hit him and his girlfriend. Investigators also reported that Smith engaged in self-injurious behavior during a later interview, including striking his head against a table, and again expressed suicidal thoughts. Those details help establish the chronology of the police encounter but do not independently prove the elements of murder or resolve the defense he described.

The distinction between the charge and the proof required for a conviction matters in a case where the broad outline is undisputed but the crucial seconds are contested. Prosecutors allege an intentional killing. Smith says he reacted to an assault. One witness said Gibson-Beard struck his sister, another denied that occurred, and police documented no visible injury to her. Another witness described an attempted punch by Gibson-Beard that missed. A court may ultimately have to weigh those accounts alongside physical evidence and any other admissible material presented by prosecutors and the defense.

Smith’s decision to retrieve or conceal a gun before returning to the dispute could also receive scrutiny, but the complaint itself should not be treated as a final legal determination about what that action proves. Charging documents are designed to establish probable cause for prosecution, not to deliver a verdict. The state retains the burden of proving guilt beyond a reasonable doubt. Smith can challenge the witnesses, the interpretation of his statements, the circumstances under which he was questioned and the state’s characterization of the confrontation through the procedures available in the criminal case.

For Gibson-Beard’s relatives, those legal distinctions follow a loss that was immediate. His family said in an obituary that he was born in Wyoming, Minnesota, in 1998 and was the father of six children. They remembered him for the affection and laughter he brought to his family and friends and said he took pride in being a father. His mother, sister and fiancée were all present in the family circle described by investigators on the day he was shot, making the prosecution inseparable from relationships that existed long before the criminal case began.

Smith was charged Aug. 31, two days after the shooting. Early reports said he was being held on $1 million bail and had no prior criminal history, with an initial court appearance scheduled for Sept. 1. Publicly accessible reporting located through Oct. 19 did not confirm a later plea, verdict, dismissal or other final disposition. Unless and until the state proves the allegation or the case is otherwise resolved, Smith remains accused of second-degree intentional murder and is presumed innocent.

Author note: Last updated October 19, 2026.