The brother of the only New Zealander killed in the September 11 attacks said bin Laden's death was justice served.
Alan Beaven, a 48-year-old environment lawyer, died when United Airlines Flight 93 crashed into a field in Pennsylvania after being hijacked by terrorists.
His brother Ralph Beaven said he felt "absolute relief" at the news Osama bin Laden was dead.
But it could not end the deep sadness he had dealt with in the decade since his brother was murdered.
"It's not closure for Alan's memory. But the fact that the person who masterminded these attacks is dead means justice has prevailed."
Bin Laden's death had brought the trauma of the first moments after he heard of the September 11 attacks back to the surface, he said.
"We have looked to move on as much as we can. This brings it to the forefront again. The tremendous sadness we felt.
"Anyone who has lost a loved one in tragic circumstances - these memories remain with people and I think you just learn to deal with them as best possible.
"We've just had to have as much closure as we can over it."