"We have cold-blooded killers in custody," offered Sheriff Neil Elks.
Twenty-nine-year-old Antwan Andre Anthony, 19-year-old Xavier Montel Shamble, 23-year-old Willie Whitehead, and an unnamed juvenile are all charged with murder, kidnapping, and robbery.
Deputies said the four all had active roles in the killings, but they were not more specific.
"The investigation and the video showed us that this was a very tragic, appalling, unimaginable, murder, senseless murder," said Sheriff Elks.
Twenty-six-year-old Nabil Nasser Saeed Al'mogannahi, 24-year-old Gaber Alawi, and 16-year-old Mokbel Mohamed Almujanhi all died when three gunmen burst into the Hustle Mart, located at Stantonsburg Road and N.C. Highway 121 in Farmville, around 10 p.m. Sunday and started shooting.
Surveillance photos of the three shooters showed two wearing hoodies and one with what appeared to be a bandana covering his face. Another man had on a blue and white striped shirt and a baseball cap.
Family members said the victims did not deserve to die.
"They did what they were supposed to do. They sat down and they didn't move and they got executed. They gave up the money. They did everything they were supposed to do and they got killed," said Tony Muhssen who is a cousin of the victims.
Deputies said tips from the community led to the shooters and they thanked the public for their help. They said all three suspects lived in the area.
A customer came in to the store Sunday evening and discovered their bodies. One of the victims died at the store. The two others died later at the hospital. The 16 year old was a student at nearby Farmville Central High School.
Al'mogannahi had just come down from New York to help out at the store because the owner was recovering from a heart condition. Alawi had also just been in town for a few days. Sixteen-year-old Almujanhi was the owner's son.
Funeral services were held at a mosque in Greenville Tuesday.
Detectives said they're still gathering evidence in the case. Anyone with information is asked to call Pitt County Crime Stoppers at (252) 758-7777.