Gwinnett police have arrested a former employee of a Duluth couple found murdered in their home Saturday night.

Ki Song Kim, 45, is charged with two counts of murder and two counts of aggravated assault.

The bodies of 59-year-old Sun Hee Choi and her 63-year-old husband Young Chan Choi were found stabbed to death inside their home in the Thornhill Commons subdivision.

They owned Best Supply, a restaurant supply business in Norcross.

A neighbor who lives next door heard screams coming from the home and first called a relative who later arrived and called police.

Prior to the murders, witnesses reported seeing a white passenger car at the couple’s house and man delivering a box of apples which is a Korean custom for invited guests.

So far police are not releasing a possible motive for the murders.