Horry County police arrested Keir Lamont Johnson, 21, for murder.
They say he's responsible for the shooting death of Shaquille Pertell on November 8.
Police say about 3 a.m., some people forced their way into a home on Brison Court near Conway and fired shots, killing the 19-year-old.
Police arrested Johnson Thursday. They say there could be more arrests.
Johnson is being held in J. Reuben Long Detention Center.