ISLAMABAD, Sept. 8 (Xinhua) -- At least one person was killed and four others were injured when a blast went off in Pakistan's northwest Khyber Pakhtunkhwa province, police officials said on Sunday.
The blast occurred near a vehicle in the Wana area of South Waziristan, the country's tribal region bordering Afghanistan, said police officials in South Waziristan.
Following the blast, rescue teams along with security forces reached the explosion site. Police cordoned off the area and launched a search operation in the surroundings to arrest the culprits.
No group or person has claimed responsibility for the attack yet. ■