Tehran, June 24 : At least six people were killed, and 25 others injured in a 26-car pile-up on an intercity road in southwestern Iran, the semi-official Tasnim News Agency reported.

The incident occurred at 10:50 a.m. local time on Friday morning (0720 GMT) when a semi-trailer truck carrying iron girders collided into 25 other vehicles because of the malfunction of its brake system, the report said.

A number of pedestrians were also hit in the incident in the province of Kohgiluyeh and Boyer-Ahmad, it added.

The number of people injured in the incident is still rising, Tasnim quoted President of Yasuj University of Medical Sciences Saeed Javdan-Sirat as saying.