As the news of Zainab's murder spread in Kasur, enraged people took to the roads and registered their strong protest against the police inaction over the matter.
Nobel Peace Prize victor Malala Yousafzai wrote that she was "heartbroken to hear about Zainab", adding: 'This has to stop.
Incidents like the one which recently took place in Kasur send shivers down one's spine, showing how brutal humanity can be at times.
The girl's parents were in Saudi Arabia for a pilgrimage.More news: Super Mario Odyssey update will add minigame and other cool features
The brutal murder of Zainab has incited anger among residents as it is the 12th such case to occur within a two kilometre radius in the city in the past year. I want the culprits involved in this heinous crime behind the bars.
The murder has sparked outrage across Pakistan.
Naz goes on to say that the 8-year-old's rape and murder will once again initiate regret, investigation, committees, commission, inquiry and suo moto but, "the truth is that the girl does not need your justice".
The murder has shocked Pakistanis with local celebrities, including former cricket star Imran Khan, joining in calls for the police to act more quickly to arrest the suspect. The men had been abducting and raping the children since 2009, under the nose of local police in the area, until the news was broken by media. She headed out for her tuition on January 4 and never returned.More news: Most daily smokers get hooked after first cigarette, study finds
The murder has prompted calls for action from cricketer Imran Khan and Nobel Peace Prize victor Malala Yousafzai.
In a speech to thousands of mourners, he blamed the Punjab chief minister, Shahbaz Sharif, for failing to "protect lives and honour of innocent girls" in the province.
The girl's parents flew back to Pakistan on January 10. "Punjab government must take immediate action and bring culprits to justice", tweeted another Pakistan journalist Salman Masood. This is not the first time such horrific acts have happened.
Another prominent Pakistani politician, Bilawal Bhutto Zardari, son of assassinated prime minister Benazir Bhutto, expressed his sympathies and solidarity with the bereaved family and demanded that Pakistan re-evaluate how it deals with such horrific crimes against children.
The Punjab government has offered a reward of 10m rupees (£66,460) for information leading to the killer's capture, as well as compensation for the protesters killed on Wednesday.More news: National Weather Service says flooding is possible Friday into Saturday