It is not known. "Molly's curse soared beneath Bellatrix's outstretched arm and hit her squarely in the chest, directly over her heart." We also know that fairly standard curses can cause permanent damage, as we discovered when Professor McGonagal was hit by so many spells at once. more than likely it was the killing curse
Sirius Black never actually killed 13 people, he was ACCUSED, but Peter Pettigrew really killed them. The spell he used was the Blasting Curse.
Bellatrix Lestrange cast an unknown curse at Sirius Black which caused him to loose his balance and fall backwards into a veil which hosts dead spirits.
Bellatrix Lestrange hit Sirius with a curse that caused him to fall back and into an archway with the veil between the living and the dead. In the movie he was hit with the killing curse.
The Cruciatus Curse (Crucio)
He never.
Bellatrix Lestrange (his cousin) sent a curse towards him, which pushed him behind the veil of the dead in the Department of Mysteries in the Ministry of Magic. The film changed it slightly and instead of just sending a curse at him Bellatrix hit him with the killing curse and he fell back into the veil.
The lady who killed black
Sirius Black was killed by his cousin Bellatrix Lestrange during the Battle of the Department of Mysteries.
Sirius Black was killed in Harry Potter in the Order of the Phoenix.
He never.
Sirius Black was killed by his cousin Bellatrix Lestrange.
YEs, Dumbledore is Dead in the 6th book. Killed by Severus Snape. And Sirius is killed by Bellatrix Lestrange in the 5th book
Bellatrix Lestrange was the one who killed Sirius Black in the battle of the Death Eater's and the Order of the Phoenix in the Ministry of Magic.
Sirius Black. His cousin Bellatrix Lestrange killed him
Bellatrix Lestrange (his cousin) sent a curse towards him, which pushed him behind the veil of the dead in the Department of Mysteries in the Ministry of Magic. The film changed it slightly and instead of just sending a curse at him Bellatrix hit him with the killing curse and he fell back into the veil.
Sirius Black is killed by Bellatrix Lestrange
The lady who killed black
Sirius Black is all I remember.
Sirius Black was killed by his cousin Bellatrix Lestrange during the Battle of the Department of Mysteries.
Sirius tried to suggest he use the "conjunctivitus" curse. :)
She used the unforgivable curse Avada Kadavra which is the killing curse.