Prominent Afghan MP Ahmad Khan Samangani was killed in a suicide bombing at his daughter's wedding on Saturday, along with 20 others.
Samangani was attending the wedding in Aybak, the capital of the country's northern region, when a man posing as a guest blew himself up in a hall filled with close to 100 people, according to the BBC.
An eyewitness claims the man grabbed hold of Samangani before detonating the explosives.
Samangani, who had only been an MP for one year, is known to be a supporter of the president, Hamid Karzai, but the Taliban have denied any involvement in the bombing.
Reuters were told by Taliban spokesperson Zabiullah Mujahid that "we don't have a hand in this issue."
"Ahmad Khan was a former commander of the mujahideen, he was notorious and many people could have had problems with him," the man said.
The criminal director of the area's police told the Associated Press that a senior Afghan National Army commander and intelligence chief Mohammad Khan were also among the dead.
Forty others were believed to have been wounded in the attack on the Uzbek MP's party.
The attack comes one day after another politician and head of women's affairs Hanifa Safi was killed in a bomb attack.