STAFF REPORTER

Sunday drivers are being urged to avoid the Kwinana Freeway near Hammond Park where a five-car pileup is clogging traffic.

Police spokesman Samuel Dinnison said his colleagues were alerted to the crash about 4:35pm.

The accident occurred in the southbound lanes, just north of the Rowley Road exit, when a car braked heavily to avoid a large item that fell off a trailer.

Five cars collided as a result of the brake-slam and traffic started to bank up not long after.

Mr Dinnison advised motorists to avoid the area.