Things didn't go precisely the way he had planned. "Afghan Suicide Bomber Kills Own Family," from [1] Associated Press (thanks to DFS):

KABUL, Afghanistan - A mother who tried to stop her son from carrying out a suicide bomb attack triggered an explosion in the family's home in southern Afghanistan that killed the would-be bomber, his mother and three siblings, police said Monday.

The would-be bomber had been studying at a madrassa, or religious school, in Pakistan, and when he returned to his home in Uruzgan province over the weekend announced that he planned to carry out a suicide attack, Interior Ministry spokesman Zemeri Bashary said.

Surviving family members told police that the suicide vest exploded during a struggle between the mother and her son, said Juma Gul Himat, Uruzgan's police chief. The man's brother and two sisters were also killed.