Investigators say surveillance video shows the suspect firing before a deadly exchange among three men.
TEMPLE HILLS, Md. — A 39-year-old man has been arrested in connection with a triple fatal shooting that began as a party dispute outside a Temple Hills banquet hall early Saturday, authorities said Monday, describing a gunfight that left three men dead and a community on edge.
Police and county leaders say the case matters now because it unfolded at a crowded birthday event and ended with three lives lost in a matter of seconds. The man under arrest faces first- and second-degree murder counts and is awaiting extradition after being taken into custody in Virginia. The victims were identified as Ronez Proctor, 27, of Waldorf; and two Washington, D.C., men, Pierre Davis, 33, and Kevon Medley Williams, 26. Officials say the hall is temporarily shut while regulators review security lapses cited after the shooting.
According to charging documents summarized by police, the violence erupted at about 2 a.m. in the parking lot of Irving’s Banquet Hall off St. Barnabas Road. Investigators said surveillance footage shows the suspect, identified as Antonio Lancaster of the Landover area, firing toward Medley Williams and Proctor as a crowd spilled into the lot after a birthday celebration. Police Chief George Nader said the three men “willingly participated in the gunfight,” describing how Davis, standing near Lancaster, exchanged shots with Medley Williams while people scrambled for cover. Proctor, who police say tried to help Medley Williams, became involved in a struggle with others and fell to the pavement.
Detectives said the video then shows Lancaster approach Proctor and fire at close range before running from the scene. Officers recovered two handguns and are searching for a third weapon believed to have been used during the exchange. Investigators emphasized that the motive behind the initial dispute remains under review and that no broader threat to the public has been identified. As of Monday, officials said Lancaster was being held in Fairfax County, Va., pending extradition to Prince George’s County to face charges in the slaying of Proctor; police allege Davis and Medley Williams shot each other during the gunfire that followed Lancaster’s first shots.
County leaders used a Monday news conference to address security concerns tied to late-night venues. County Executive Angela Alsobrooks’s administration said Irving’s Banquet Hall is closed pending a hearing, citing what officials called a lack of working cameras and an approved security plan. “Having establishments open that late at night without security is a problem, and it will not be tolerated,” State’s Attorney Aisha Braveboy said. The county, which recorded a significant decline in homicides last year, has still seen a cluster of early 2026 shootings, including a separate rifle attack that killed a man in Upper Marlboro on Sunday.
Authorities said the Temple Hills case will move forward with extradition, a bond review, and presentation to prosecutors for trial preparation. Detectives are still seeking additional witnesses and are reviewing more camera footage from surrounding businesses. Police said any additional arrests would depend on evidence tying other individuals to crimes beyond the exchange of gunfire already described. A regulatory hearing on the hall’s operations is expected later this month, with county inspectors to report on camera requirements, staffing, and closing hours. Court dates will be scheduled after Lancaster’s transfer to Maryland custody.
Neighbors described a chaotic scene as cars sped away and people screamed for help. “It sounded like fireworks at first,” said Marcus Hill, who lives nearby. “Then we saw folks running from the lot.” A man who attended the party said the argument began inside before security ushered guests out. “It got heated, and then everybody rushed out,” said the guest, who declined to give his name. Outside the hall Monday, balloons and candles formed a small memorial as workers boarded up a broken window.
As of Monday evening, police said Lancaster remained in Virginia custody awaiting extradition. Investigators expect to provide an update on evidence testing and any additional charges by the end of the week. A regulatory decision on the banquet hall’s status is also pending after the county’s review of security procedures.
Author note: Last updated January 6, 2026.