These are the faces of the three little girls who were strangled by their own father because he 'didn't want to waste money on their education'.

Irshad Ahmed killed his three daughters, twins Chashman and Aman aged seven and a five-year-old Fiza, on Sunday night, after encouraging his wife Shabana Naz to attend a wedding with their only son.

She only took one of her daughters, the youngest aged two, after refusing to leave her behind at their home in Chak Jumra town, around 135 miles northwest of Lahore.

A neighbour told her what had happened later: she returned, Shabana discovered the bodies of the three little girls lying in the bed - and their father gone.

Murdered: Twins Chashman and Aman, aged seven, were killed by their father Irshad Ahmed on Sunday night

Dead: Five-year-old Fiza was strangled alongside them. Ahmed believed they were a burden, his wife has said

Speaking today, Shabana revealed how her husband had believed his daughters to be worthless, claiming they would mean the family would 'die of hunger'.

Worse, he had threatened to kill before.

'He said, "I do not want to educate them and don't want to waste money on their upbringing. My only son is my future hope and one day I will vanish these four problems",' the 35-year-old told MailOnline.

She added: 'My husband never gave my daughters a penny of pocket money when they went to school. All their school fees, uniform and expenses for books were paid by my parents.'

Shabana said things had got worse since the birth of her youngest daughter.

'He always said that we all would die of hunger as we have four daughters and it's a big expense of their education and then marrying them.'

Distraught: Shabana, right, has called for her husband, who is on the run, to be strangled like her children

Happier times: Ahmed and his wife Shabana Naz, pictured on their wedding day, had four daughters and one son - but he only valued his son, says Shabana, who has now fled back to her parents' home

Shabana said she had tried to tell people about Ahmed's threats, but no one had taken her seriously.

She had now fled to her parents' home, in the Elahiabad area of Faisalabad, where she feels safer.

'I cannot trust anyone there [in the village],' the distraught mother said.

My husband never gave my daughters a penny of pocket money when they went to school. All their school fees, uniform and expenses for books were paid by my parents Mother Shabana Naz

'They are all killers. Whenever my husband threatened of killing our daughters, I always complained to his mother but she never took it serious and always said he is just joking.'

Police in the central province of Punjab confirmed Ahmed was wanted for the killing.

'Irshad Ahmed, a resident of Chak Jumra strangled his four daughters, two sets of twins, late Sunday night,' local police official Ghulam Shabir said.

Zaheer Ahmed, the investigating officer, added there were rope marks on the girls' necks.

Other villagers said Ahmed had been on anti-depressants in the lead-up to the murders.

However, it is not unheard of for a father to kill his daughters in Pakistan, where they can be considered a burden.

In 2013, Umar Zaib, 28, was arrested for drowning his 18-month-old daughter because he had wanted a son instead.

Heartbreaking: The bodies of the three little sisters after their father strangled them. Ahmed is on the run

For the mothers, this is no comfort, of course.

Shabanaz is now calling for her husband - who she claims was addicted to weed - to be hanged.