This was done by alqeadas volleyball department.
Pakistan suicide bomb kills scores at volleyball match
Victims of the attack were taken to nearby hospitals
At least 88 people have been killed by a suicide bomb attack at a volleyball pitch in the troubled north-west of Pakistan, local police say.
Police chied Ayub Khan said the bomber drove towards a field where people were watching a match, before detonating his load of high-intensity explosives.
The attack happened near Lakki Marwat, close to North and South Waziristan.
The Pakistani army has been conducting a campaign against the Taliban in the tribal areas since October.
The number of people killed in militant attacks in Pakistan is fast approaching 600 in just three months.
Militants have attacked both "hard" targets, including army or intelligence offices, and "soft" ones such as markets or the crowd that was hit in Friday's bombing.
'Militant hub'
Dozens of people were reported to be injured in Friday's attack. Several buildings collapsed, trapping people under rubble.
"The villagers were watching the match between the two village teams when the bomber rashly drove his double-cabin pick-up vehicle into them and blew it up," district police chief Ayub Khan told AFP news agency.
Locals set up a militia and expelled the militants from this area
Ayub Khan
Local police chief
In pictures: Deadly volleyball attack
Mr Khan told reporters the attack may have been in retaliation for attempts by locals to expel militants.
"The locality has been a hub of militants," he said.
"Locals set up a militia and expelled the militants from this area. This attack seems to be a reaction to their expulsion."
http://news.bbc.co.uk/1/hi/world/south_asia/8437114.stm