Philadelphia Man Arrested In Feb. 27 Norristown Slaying

NORRISTOWN — A 27-year-old man was arrested today in the Feb. 27 fatal shooting of a Norristown man in a domestic dispute outside a residence in the 700 block of Chain Street.

Tymeir Henderson, who resides on East Pleasant Street in Mount Airy, was apprehended today in Philadelphia by members of the U.S. Marshals Eastern Pennsylvania Violent Crimes Fugitive Task Force.

Henderson is accused of fatally shooting Dyon Thompson, 28, and shooting Dyon’s brother, Quad Miller, 19 at the residence of 26--year-ol Niearah Avery.

Avery was pregnant with Henderson's child and Thompson is the mother of the victim's seven-year-old daughter, according to police.

Thompson died as a result of multiple gunshot wounds to the chest, according to an autopsy conducted by Dr. Erica Williams of the Chester County Coroner’s Office.

Thompson was pronounced dead in Paoli Hospital, officials said.

On March 4, Montgomery County District Attorney Kevin R. Steele and Norristown Police Chief Derrick Wood issued a warrant for Henderson’s arrest.

“We are grateful to the U.S. Marshals, who worked diligently to find this murderer, and safely get him off the streets without further bloodshed,” Steele said Friday afternoon. “The marshals’ work has been invaluable for the safety of our community.”

Henderson is in Montgomery County Correctional Facility, Eagleville, without bail after being arraigned befoe District Judge Gregory Scott on charges first-degree murder and related charges.

First-degree murder carried a mandatory sentence of life in prison.

According to Norristown police and county detectives:

Police were dispatched to the 700 block of Chain Street at 4 p.m. Feb. 27 after Miller called 911 to report that he had been shot in the back, and that his brother had been shot multiple times.

Both were found in an alley behind the residence.

They were taken to Paoli Hospital, Chester County. Thompson was pronounced dead, and Miller was treated for a gunshot wound to the back.

Police recovered eight 9mm fired Luger-brand cartridge casings in the rear yard.

An investigation disclosed that Thompson arrived at the residence to speak with Niearah Avery, the mother of his 7-year-old daughter. His brother, Miller, waited in the car.

Avery, who was pregnant with Henderson's child, and was in the apartment Henderson, when Thompson arrived.

Miller told police he waited in the car, where he could see his brother talking with Avery, Henderson and a female friend of Avery.

As Henderson began walking back toward the car, witnesses said multiple shots were fired, killing Thompson and striking Miller as he was attempting to exit the parked car.

Henderson fled from the scene on foot.

Police said Avery legally owns a 9mm handgun, which Henderson has “handled” in the past.

Avery told detectives that she keeps the gun in her bedroom, but it was not recovered when detectives executed a search warrant.