Zakiiy Carson, 35, called 911 around 6:15 p.m. Sunday and allegedly told dispatchers he committed the killings.
Officers arrived at the home in the 900 block of North 5th Street to find the bodies of 52-year-old Latricia Ezell and 29-year-old Ashley Campfield in the parking lot.
Carson was standing nearby, police say.
Edna Rivera, who lives next door to the family, says she still can't believe how quickly the whole thing unfolded.
"I seen him get in the cop car, and just made eye contact, and he just gave me a look of, 'I messed up,'" Rivera said.
After his arrest, Carson allegedly told police he had been arguing with his mother and sister before going outside for a cigarette.
When Ezell and Campfield came outside as well a short time later, Carson allegedly pulled out a gun and shot his mother in the head before shooting his sister in the back.
Action News spoke with several neighbors who say they never saw Carson behaving aggressively, but they all agree his personality turned unusual over the past few months.
"He told my fiancé the FBI is out to get him and stuff like that, and turn off your cell phones and stuff like that because it's tapped," said Jenna Woolf.
We also spoke with Ashley Campfield's aunt, Beata Stephenson, who says she still can't believe this happened.
"I just talked to her about coming to my house for Thanksgiving because she always came to my house for Thanksgiving, you know, with my family. It's just horrible. Just horrible," Stephenson said.
Campfield's 3-year-old son was inside the apartment when all of this happened. He was not injured and is now in the care of family members.
Carson was arraigned on Monday morning and is currently being held without bail at the Lehigh County Jail.
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