By Kathleen Brady Shea, Managing Editor, The Times

Authorities said Jamica Woods, 37, of East Fallowfield Township, was fatally shot Tuesday by Gregory A. Twyman, 44, her longtime boyfriend.

The homicide on Tuesday in East Fallowfield Township is being called “an execution” by Chester County District Attorney Tom Hogan.

Hogan said Gregory A. Twyman, 44, was taken into custody while casually catching a smoke on the porch shortly after he fatally shot  Jamica Woods, 37, his longtime girlfriend – and mother of their teenage daughter – at the residence they shared on Rokeby Road.

“This was a premeditated and cruel murder,” said Hogan.  “This was not an argument, this was an execution.”

According to the criminal complaint, Twyman called 9-1-1 at 12:10 p.m. on Tuesday: “I need the police; I just  shot my girlfriend,” he told the dispatcher. When police arrived to take him into custody, he was on the porch with a cigarette, the complaint said.

Gregory A. Twyman, 44, has been charged with first-degree murder in connection with the death of his longtime girlfriend, Jamica Woods, 37, on Tuesday.

Police found Woods inside the residence, dead from multiple gunshot wounds to her arms and midsection, the complaint said.  The murder weapon – a single-shot shotgun that had to be reloaded to fire more than one time – was also inside the home, the complaint said.

The day before the murder, the defendant had changed his Facebook profile picture to a shotgun shell, with a shotgun as the background.  In response to comments posted, the defendant stated that the picture was “a slug fool,” that it was “gon be too late” if law enforcement tried to intervene, and “Once i handle my business, i don’t give a [expletive]!”

During an interview with police, Twyman said he and Woods “had been fighting for days and that he had bought the shotgun shells last week at Walmart,” the complaint said.

Twyman, who has an extensive criminal history and was awaiting trial next month on drug charges, has been charged with first-degree murder and related offenses. He was taken to Chester County Prison, and a preliminary hearing is scheduled for May 30, court records said.

“This is another example of domestic violence accelerating into a murder,” said Hogan.  “A mother is dead and a child has been left an orphan.  We will pursue justice for the victim’s family.”

East Fallowfield Township Police Chief Chris Porter, one of the first officers to respond to the scene, said the homicide occurred in a safe and quiet part of the township. “East Fallowfield police officers and the Chester County Detectives responded quickly and professionally to arrest this defendant and get him out of our community,” Porter said.

The East Fallowfield Police Department and the Chester County Detectives will continue to investigate the case, Hogan said.  Anybody with information should call East Fallowfield Police Officer Samantha Harper at 610-384-9163 or Chester County Detective Butch Dutter at 610- 692-5100.  Deputy District Attorney Michelle Frei has been assigned as prosecutor, Hogan said.