KARACHI, Nov 3 (AFP) - At least five people were killed and a dozen injured Tuesday after a passenger train collided with a cargo train on the edge of Pakistan's biggest city Karachi, officials said.

"We have received five bodies and more than a dozen injured passengers," Doctor Seemi Jamali of Jinnah Hospital told AFP.

The accident took place at Juma Goth, in the suburbs of Karachi, when the driver of the Karachi-bound Allama Iqbal express ignored a traffic signal and collided with the goods train, senior railway official Aftab Memon said.

Most of the casualties occurred in one passenger coach of the train, which was coming from the eastern city of Lahore, he said.

Rescue teams were working at the crash site.

Pakistan suffered its worst train disaster in more than a decade in 2005 when three trains ploughed into each other in southern Sindh province, killing around 150 people. More than 350 people were killed in a 1990 train smash.