UPDATE: 12-year-old killed outside school

A grade 6 pupil has been killed in a shooting outside a primary school in Katlehong, Ekurhuleni, east of Johannesburg.

*This is a developing story and will be updated as more details become available

JOHANNESBURG - A 12-year-old girl and her grandfather have died after being shot outside a school in Katlehong.

It's understood the shooting took place at the Izibuko Primary School on Wednesday afternoon.

READ: Lesufi calls for calm in Katlehong

SAPS spokesperson Lungelo Dlamini said the shooting happened as a man and woman were collecting their child, who was returning from a school trip.

The family was attacked by a group of men driving a white Toyota Quantum. The man died on the scene.

READ: Two guards shot dead at KZN school

The 12-year-old girl was hit by a stray bullet and died early on Thursday morning.

Police do not know what the motive behind the attack was and no arrests have yet been made.

Dlamini said the police are currently pursuing leads in the investigation into the attack.

Gauteng Education MEC Panyaza Lesufi urged the police to effect an arrest within 72 hours.

"Those that are responsible for these kinds of deeds must know they can run, they can hide but we will find them and when we find them the law will be merciless," he said.

Two people including a Grade Six pupil have died after an attack outside a Katlehong primary school, east of Johannesburg. Courtesy of #DSTV403