James Sylvester Caroline, 52, of the District, was arrested Wednesday afternoon for a probation violation, and police say they expect to charge him in the homicide.
Tommy K. Wong, 52, was killed during a robbery at his store, Capital Jewelers. Police released a video of a suspect in the killing who entered the store wearing a neon yellow traffic vest. Police said the suspect was inside the store for less than 20 minutes and that he took jewelry.
Caroline is being held without bond in the Arlington County Detention Facility, police said. Online court records in the District, Maryland and Virginia show Caroline has a record of arrests for crimes including larceny, credit card fraud and failing to appear in court.
Authorities declined to release additional information about the arrest or the investigation.
Wong, who lived in Herndon, was found dead inside the locked store shortly before midnight Friday. Family members contacted police because he had not returned home.
Family members remembered him as a dedicated family man who was kind and generous to his friends.
Wong’s homicide was the second in the county this year.
This post has been updated.
Staff researcher Jennifer Jenkins contributed to this report.