QUETTA: At least four people were killed in a blast in Balochistan's Chaman area on Thursday, DawnNews reported.

Nine people were also wounded in the explosion that occurred in a house near the Chaman bypass in the southwestern region.

According to Levies sources, several surrounding houses also collapsed due to the impact of the blast.

Security forces had cordoned off the area and started an investigation.

The cause of the blast had not yet been determined.