Bryan police have arrested a College Station man and accused him of the murder on Carter Creek Parkway Sunday.
Marcus Watson Jr., 23, had been arrested Tuesday by CSPD on what police say is an unrelated drug charge. While in the Brazos County Jail, he was served a warrant for the murder of Trevor Williams.
Williams, 19, was found shot in the head in his home late Sunday night, and died Monday at St. Joseph Hospital in Bryan.
Bond for Watson Jr has been set at $200,000.
According to county records, this is the seventh time Watson has been in the Brazos County jail since April 2010. Most of the charges were drug-related.
Authorities have not released a possible motive for Sunday's murder.