The man, 31, was arrested about 12.30am today at a home in Canley Heights in Sydney’s west and has been charged with two counts of murder.
Hoa Tek Chien, 69, and his wife Heang Kim Gau, 68, were found dead inside their family-run Buzzy Bee’s Burger House in Cambridge Park about 9.40am.
Police will allege the couple and the charged man were known to each other.
He was refused bail and will face court later today.
The community is in mourning after the couple were found dead.
Locals in Cambridge Park have been left reeling and are paying tribute to the couple.
Flowers and hand-written cards have been left at Buzzy Bee’s Burger House shopfront on Oxford Street.
“For 29 years, seven days a week, rain, hail or shine, they dedicated their lives to this place,” one note read.
“They didn’t deserve this. I pray you both rest easy. We are hurting, we will miss you.”
The shop remains a crime scene.
One of the couple’s sons made the grisly discovery of their bodies yesterday morning.
9News understands the couple sustained multiple stab wounds and investigators are treating the alleged murder as a targeted attack.