The killing of Robert Fuller Jr. inside an assisted living center unfolded into a case shaped by surveillance footage, door tampering and a second shooting miles away.
GAITHERSBURG, Md. — Detectives investigating the killing of 87-year-old Robert Fuller Jr. at a Potomac senior living facility said a tampered door alarm, surveillance footage and later ballistic evidence helped them charge employee Maurquise Emillo James with first-degree murder.
The case drew intense attention because of where it happened and how police say it was carried out. Fuller, a wealthy philanthropist and retired lawyer with deep ties to Maine, was found dead in his apartment at Cogir Potomac Senior Living on Feb. 14. Police say James, 22, worked there as a medication technician and remained on the job for several days after Fuller was killed. A separate Feb. 24 shooting during a state trooper traffic stop in Baltimore then supplied evidence that investigators say connected the same gun to both crimes. That sequence turned a private death investigation into a broader public safety case.
According to Montgomery County police, first responders arrived at the facility at 7:34 a.m. on Valentine’s Day after a report of a medical emergency. Fuller was found unresponsive inside his apartment and pronounced dead at the scene. Detectives soon determined the injuries were consistent with a contact gunshot wound to the head. No gun was found in the room, an early detail that pushed the case toward homicide rather than suicide. Police said they began reviewing surveillance footage from around the building and found images of a person wearing a mask moving toward a side door, entering the building through a stairwell and later leaving the same way. The route mattered because investigators later said that door had been propped open and its alarm deactivated. Those findings gave detectives both a timeline and a likely point of entry.
The side-door evidence became the center of the case. Police said they found a folded paper towel near the doorway that appeared to have been used to hold the door open. They also learned from alarm technicians that the last day the door was working properly was Jan. 9. Detectives then reviewed older surveillance from that date and said James appeared in the same stairwell area when the door alarm was disabled. On Feb. 20, police publicly released video of a person in a distinctive plaid jacket walking through the facility courtyard. Tips followed. In local television reporting, police said another Cogir employee later described finding James inside the building after his shift had ended and questioning him about a door sensor. James then fled, according to that account. Investigators later found items near the doorway that matched what detectives had already recovered. Police have not said whether James had help, and no second suspect has been announced.
The investigation took another turn before dawn on Feb. 24, when a Maryland state trooper stopped a silver 2009 Infiniti G37 without tags in West Baltimore. State police said the driver fired at the trooper, injuring but not seriously wounding him. Authorities recovered at least one 9mm shell casing and entered it into the national ballistic database. Montgomery County detectives later received a lead that the casing matched the gun used in Fuller’s killing. By that afternoon, officers from multiple agencies arrested James in Rockville after he tried to run, authorities said. State police charged him with attempted first-degree murder and related offenses in the trooper case. That second arrest announcement filled in a major missing piece for detectives investigating Fuller’s death, because it linked the homicide to a gun and to a suspect already on law enforcement radar.
Fuller’s death also drew attention because of who he was. His obituary described a life that stretched from Boston to Maine and then to Maryland. He attended Milton Academy, Princeton University and the University of Pennsylvania Law School, later building a long legal career in Maine. He was known publicly for large donations, including a 2021 pledge of $1.64 million to help complete athletic field improvements in Augusta. Local leaders in Maine remembered him as a civic-minded donor, former attorney, retired Navy Reserve officer and author. Those biographical details helped explain why his death drew regional attention far beyond Montgomery County. A man known for giving money to schools and local causes had been killed inside a residence designed for older adults who needed support and security.
Questions about those safeguards are now part of both the public and legal fallout. In a civil lawsuit filed in March, Fuller’s partner alleged the facility ignored earlier warnings about James, including concerns raised by a nurse 11 days before the shooting. The lawsuit also alleges James was allowed to keep serving residents, including Fuller’s partner, after Fuller was killed. Those are allegations, not criminal findings, and they have not been proven in court. But they sharpen the next phase of the case, which is likely to focus not only on whether prosecutors can prove murder, but also on what Cogir managers, supervisors and alarm contractors knew about the side door, the employee complaints and James’ access to residents. As of March 24, the criminal charges remained pending and no public trial date had been announced.
The story now stands at the intersection of evidence and trust. Police say video, physical items near the side door and a ballistic match gave them a clear path to James. Staff accounts, including the report of a suspicious after-hours return to the building, added to that picture. Capt. Sean Gagan said the employee who reported James’ presence deserved credit for acting on suspicious behavior. Fuller’s family and community, meanwhile, are left with a different set of questions: not only who did this, but how someone accused of bypassing a building alarm and killing a resident could remain inside a care facility unnoticed for so long. Those answers are expected to emerge only slowly, through court hearings, witness testimony and further disclosure of facility records.
While the civil lawsuit pushes for records about security failures and staff warnings, James remains jailed on the homicide and trooper-shooting charges. The next significant developments are expected in pretrial court proceedings and early motions over evidence and access to facility documents.
Author note: Last updated March 24, 2026.