Round Rock police said Friday that a man found dead on New Year's Eve is now actually thought to have been killed on Christmas.

Police said suspect Richard Joseph Franklin Acosta, 23, allegedly shot 37-year-old victim Joshua Armstrong in his home on Dec. 25, 2017. According to court documents, Acosta came back to Armstrong's house later that night with his girlfriend, Vanessa Velasco, 20, and allegedly took five firearms, a television, liquor and a vacuum from the residence. Police said Velasco and Acosta also allegedly stole a dog belonging to the victim, in addition to the dog's bedding and toys.

The Round Rock Police Department SWAT team and Criminal Investigations Division served the warrant Jan. 13 at 301 Phillips Street in Hutto, and officials said Acosta was taken into custody without incident.

Acosta has been charged with murder and, according to online records, is currently in the Williamson County Jail. Pursuant to the investigation, police said Vanessa Velasco, 20, was also arrested and charged with burglary of a habitation in connection to the same incident, and is also in Williamson County Jail.