At least eight people were killed and five others injured in three separate incidents of bomb explosion and firing in Pakistan on Monday, local Urdu media reported.

Dawn News said that a four-year-old boy was killed while his two playmates were injured when a bomb exploded near them in Quetta in southwest Balochistan Province.

Police said the kids were playing outside their home when the incident happened.

Izzat Ali, a police officer in the area, said that they were investigating the motive behind the explosion.

In a separate incident in Karak district of the country's northwest Khyber Pakhtunkhwa Province, three people including a woman were killed and two others injured in a militant attack.

Police said that the victims were on their way home after hearing at a local court when some unknown militants sprayed bullets at their vehicle and fled the scene.

The injured people have been shifted to a nearby hospital.

In the third incident in Nowshera district of the province, four people were killed when some unknown attackers opened fire at them after entering their home.

No group has claimed any of the attacks yet.

Police cordoned off all the three areas for investigation following the incidents.

source: Xinhua