SANTA CLARA, Calif. — A horrific murder-suicide in northern California has been revealed as a highly calculated, targeted attack carried out by a Bloomington, Indiana man against his estranged brother.
The Santa Clara Police Department disclosed new details regarding the May 8 tragedy that left two men dead and a neighborhood locked down as gunfire rang out from a burning house.
Santa Clara Police Chief Cory Morgan identified the suspect as 49-year-old Matthew Heflin of Bloomington and the victim as his 52-year-old brother, Mark Heflin. According to investigators, the brothers had been completely estranged for the past three years.
Police revealed that Matthew Heflin orchestrated a meticulous plan to confront his brother, traveling more than 2,000 miles from Indiana to California in a rental vehicle packed with multiple firearms and ammunition. To mask his intentions, Matthew told a friend in Indiana that he was merely planning to visit Colorado.
Financial records indicate Matthew arrived in the greater San Jose area around April 14, where he spent weeks tracking his brother or laying low.
Three days before the attack, Matthew used a short-term rental platform to lease the home directly adjacent to Mark’s residence in the 600 block of Enright Avenue. He even arranged to have fire logs manufactured and delivered to the rental property ahead of time. Family members told police they had absolutely no idea Matthew was in California, let alone living next door.
At approximately 12:25 p.m. on Friday, May 8, Mark Heflin was outside retrieving items from his car when Matthew approached him. Ring surveillance footage from across the street captured a brief verbal exchange between the two.
“The suspect, who was concealing a firearm inside a paper bag, opened fire,” Chief Morgan said during a press conference. Investigators later recovered 12 spent shell casings from the front lawn.
When police arrived at 12:27 p.m., they found Mark suffering from multiple gunshot wounds. As officers dragged Mark away to administer immediate medical aid, gunfire continued to echo through the neighborhood.
Matthew retreated through a side yard, fired several more rounds at his brother’s vehicle and house, and locked himself inside the short-term rental. He then used the pre-delivered fire logs to intentionally ignite a massive fire in a rear bedroom before dying by suicide.
The active gunfire and spreading flames forced police to deploy armored rescue vehicles, drones, and tactical teams to safely evacuate terrified neighbors and protect arriving firefighters. Mark Heflin succumbed to his injuries at the scene.
Because the rental house was heavily damaged and deemed structurally unstable, investigators could not safely enter until Saturday morning, May 9, when Matthew’s body was finally recovered from the charred debris of the rear bedroom.
Inside the burned room, detectives made a stunning discovery. Alongside Matthew’s passport and ammunition, investigators recovered four pistols—one of which was found near his body and another tucked into his waistband—and approximately $95,000 in cash. Police noted they are still investigating the origin of the money and whether it played a role in the crime.
Officials in Indiana executed a search warrant at Matthew’s Bloomington home but found no notes, manifestos, or journals explaining a motive.
Mark Heflin is survived by his wife and daughter, neither of whom was home at the time of the shooting. The brothers’ parents both reside in Indiana.
Addressing the grieving family, Santa Clara Mayor Lisa Gillmor said, “A husband is gone, a father is gone, and no words from any of us can fill that absence.
