Sandra Bullock's father, John Bullock, has died.

Bullock's younger sister, Gesine Bullock-Prado, announced on Instagram Wednesday that their father died Sept. 18. He was 93.

Sharing a black-and-white throwback photo of John, Bullock-Prado wrote: "Beloved baby brother, American #WWII #bronzestar🎖 #veteran, husband, father of 4 strong women, #grandpa, adorable scamp, handsome devil, and trickster to the end."

Bullock's boyfriend, Bryan Randall, posted a tribute to John on his private Instagram account.

Randall confirmed the Army veteran was "surrounded by family and friends" when he "left the building" Tuesday, alongside a picture of John smiling and holding a sign that reads "no (expletive) allowed."

He thanked his girlfriend's father for his service, adding: "PS: Hey God, we’re sending you a live one!"

The "Ocean's 8" star hasn't commented on her father's death yet. His passing comes nearly two decades after Bullock lost her mother, Helga, in 2000.

John Wilson Bullock February 11, 1925 - September, 18 2018 Beloved baby brother, American #WWII #bronzestar🎖 #veteran, husband, father of 4 strong women, #grandpa, adorable scamp, handsome devil, and trickster to the end.

A post shared by Gesine Bullock-Prado (@gesinebp) on