ISLAMABAD, Nov. 23 (Xinhua) -- At least four people were injured in a landmine blast in Pakistan's southwest Balochistan province on Friday, local media reported.

According to reports, the blast took place at about 12:45 p.m. local time in the Mattali area of Dera Bugti, a district in Balochistan province.

The target of the attack is not known yet, and police have launched an investigation into the incident.

Following the incident, rescue teams and security forces rushed to the site and shifted the injured people to the Civil Hospital Dera Bugti for treatment.

Security forces have cordoned off the area and launched a search operation in the surroundings to arrest the miscreants.

No group or individual has claimed the attack yet.