At least five people were killed and five others injured when explosive materials fixed at a motorbike exploded in Sibi district of Pakistan's Balochistan on Tuesday, local media reported.

The blast took place after a rally by former Prime Minister Imran Khan's Pakistan Tehreek-e-Insaf party, senior police officer Zaka-Ul-Hassan said, hours after Khan was handed a 10-year jail sentence by a court for leaking state secrets. 

No group has claimed the attack yet.

(With input from Reuters)