A model crowned the Face of Asia has fallen 150ft to her death from a luxury block of flats in Greater Manchester after finding out her boyfriend was married with a child.

Sahar Daftary, 23, a Londoner, fell from the 12th storey of the ultra-modern NV buildings in Salford Quays just before 10pm on Saturday night.

Ms Daftary is thought to have visited the flat to collect her belongings after pulling out of a fashion show earlier in the day, claiming ill-health. Friends said the model, who held a ceremony last year in which she publicly declared her love for her boyfriend, was distraught to discover subsequently that he was married with a child.

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The boyfriend, a 33-year-old property developer who has not been named, was arrested and questioned by police but has since been bailed. Police investigating the cause of death are examining the content of a blog with Ms Daftary's name in which two postings ruminate on the "journey of life's ups and downs".

The first posting, "Letting Go", dated Thursday 13 November, is 522 words long. In a confused tone it asks: "What is wrong with you that you hold on so tight to what is not there?", before declaring "Let go of the hope of maybe". It continues: "Look at the pain it has caused you, look at the dreams it has shattered".

A second posting the following day, "Life Goes On", is more positive. In it the author says: "I myself was a person who carried too much luggage," but later implores: "Let go of the past and stop staring at the losses". It concludes with the uplifting message: "Fight it and you will come out on top!".

Both postings were written soon after Ms Daftary split from her boyfriend. Ms Daftary, who won the Face of Asia competition last year, was in Manchester to appear at a catwalk show at an Indian restaurant on Stockport Road called Nawab, but left during the preparations.

A resident at the waterfront apartment block, who did not wish to be named, said: "We were out for the evening, and when we came back, the police had cordoned off part of the car park."

Her friend, Afrah Sami, told The Manchester Evening News: "We are all ... devastated. Sahar loved life and she was always at the centre of the party. She met [her boyfriend] in Manchester and they were very happy. Then she won the Face of Asia. She seemed to have the world at her feet.

"But she discovered that he was married and became very unhappy. The stress changed her and she had stopped eating properly. When she came up on Saturday she was ... preoccupied with collecting her things from the apartment, but he didn't want to see her."

A police source disclosed: "Witnesses have said there was no shouting or ranting – just a single scream. It is being looked at as either a suicide or a horrible accident."