A train ticket inspector allegedly lured a mum into a first-class carriage before gang-raping her with three other men, sparking calls for the group to be hanged.
The ticker inspector is said to have offered the young mum-of-two an upgrade from her economy class seat to the air-conditioned compartment during the 500-mile journey between Multan and Karachi.
Once inside, the ticket inspector and three other men allegedly took turns to assault her before threatening her if she tried to escape.
The woman managed to flee the train and reported the incident to the police.
The Railways Police chief Faisal Shahkar said the shocking assault happened on the Bahauddin Zakaria Express train last week.
The suspects fled to “far-flung areas of Punjab” in the hours after the attack in the hopes of escaping arrest, Pakistani newspaper, Dawn reports.
But police caught up with them and arrested two men on Monday with a third detained the following day, officials said.
The authorities said a medical examination of the mum confirmed she had been gang-raped.
The horror attack has sparked outrage, sparking calls for the men to be hanged.
One man told state broadcaster Geo: “I wish to see those behind this cruel act hanged by their throats.”
An editorial in Dawn branded the crime “ghastly” and demanded answers over the lack of security on the train.
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It said: “Another horrific incident of sexual violence has come to light, underscoring how a cavalier approach to security arrangements can embolden criminally inclined men to indulge their worst instincts.
“[Women’s] safety is the barometer of a nation’s values.”
Pakistan is under pressure to crack down on sexual violence as more crimes are reported.
According to official estimates, the number of women raped in Pakistan in the last four years stands at around 14,000 – which amounts to almost 11 per day.