Hina, working as a nurse in a private nursing home killed herself by consuming poison last evening in front of her colleague, Deepak, Ghaziabad DSP Anil Yadav said.
She was in a relationship with Deepak for the past one and a half year and both had decided get married, he said.
The family members of the girl did not agree to the marriage due to which she took the extreme step, Yadav said.
After consuming poison Hina started vomiting was rushed her to GTB hospital where she breathed her last this morning, he said.
In two separate incidents, 35-year-old Chander Pal and a brick kiln labourer, Raja committed suicide by hanging themselves yesterday from the ceiling of their residences in different localities of the city, Yadav said.
No suicide notes were recovered from them and the bodies have been sent for post-mortem, he said.