A private Turkish plane on Sunday crashed in Iran, killing 11 people on board, a civil aviation spokesperson said according to Iranian state news agency ISNA.
It added that the plane took off from Sharjah International Airport in the UAE.
A little over an hour later, it rapidly gained altitude and then dropped drastically within minutes, according to FlightRadar24, a flight-tracking website.
The plane had left from the emirate of Sharjah and went down near the city of Shahr-e Kord, about 400 kilometres (250 miles) south of Tehran, it reported.
Three crew members, a woman who is a relative of the company's founding family and 7 of her friends were on board.
Her public Instagram page showed her standing next to an aircraft with the unique tail code TC-TRB - the same as the plane that went down and images from inside the aircraft.
Basaran, a former deputy chairman of Trabzonspor football club, owns businesses that span yachts to energy.
Just yesterday, before the incident occurred, Miss Basaran posted a photo of herself and seven smiling bachelorettes on her hens trip at a Dubai resort.
In another picture, she holds heart-shaped balloons inside the plane.
Miss Basaran was due to marry businessman Murat Gezer on April 14 at Istanbul's Cirali Palace.
There was no further activity on her account after that. The state-run IRNA news agency and state television said rescuers were trying to reach the scene.
Iran's ISNA news agency quoted Jafarzadeh as saying 11 people were believed to be on board, but there was no word on their fate.