Bradley William Stone was identified as the man who allegedly shot and killed six people at homes in Montgomery County, Pennsylvania, Monday, the Associated Press reported. Three others were seriously injured. Stone, 35, is still at large, the AP said. He is described as having a red/auburn beard and is 5'10" tall weighing 195 pounds, WPVI added.

All of the victims involved in the fatal shooting had a "familial relationship" to him, Montgomery County District Attorney Risa Vetri Ferman said. His first victim was his ex-wife, with whom he'd been reportedly fighting for custody of their children. The kids were taken from their home by the suspect but then found near the apartment where their mother was shot, WPVI said.

Stone was a former military man, a neighbor told the AP. Known to use a cane to walk around, he was reportedly wearing military fatigues during the shooting spree.

The DA said Stone is “armed and dangerous,” according to WPVI. “Anyone with information about Stone's whereabouts is asked to call 911 immediately. Do not approach him. Police are conducting an extensive search in and around Pennsburg, at both known and outdoor locations where Stone may be located,” the DA added.

As police searched for Stone, they reportedly tried to get him out of a home in Pennsburg. “Bradley, this is the police department!" an officer reportedly shouted, according to the AP. "Come to the front door with your hands up. You're under arrest."

Several shots were heard at the Pennsburg home, where police believe Stone is hiding, WPVI tweeted. SWAT teams reportedly shot tear gas into the basement, WPVI reporter Mike Neilon added.

The shooting remains under investigation.

This is a developing story.

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