ISLAMABAD (Reuters) - At least 21 people were killed in Pakistan on Saturday in a suspected suicide bomb attack near the office of an election candidate supported by assassinated opposition leader Benazir Bhutto's party, a Reuters reporter said.

"I myself have counted 21 bodies," said the reporter in Parachinar, the main town in Kurram tribal region on the Afghan border, where the attack took place.

(Writing by Zeeshan Haider)