The Instagram star Mina Basaran was one of 11 people killed in a private-jet crash in Iran on Sunday.

The plane had taken Basaran and seven friends to Dubai in the United Arab Emirates for her bachelorette party.

It was traveling back to Istanbul when it gained altitude and then "dropped drastically," according to a flight-tracking website.

Basaran was set to marry her fiancé, Murat Gezer, on April 14.

The Turkish Instagram star and construction heiress Mina Basaran was one of 11 people killed in a private-jet crash in Iran on Sunday.

Reports indicated the Bombardier Challenger 604 jet crashed in the Zagros Mountains outside Shahr-e Kord, a city that sits roughly 230 miles south of the Iranian capital, Tehran.

The crash killed all 11 people aboard the plane, including three crew members, according to the Associated Press. Authorities have recovered 10 bodies from the crash site.

The plane was headed to Istanbul from the United Arab Emirates after Basaran, a bride-to-be, held her bachelorette party in Dubai with seven friends. She was due to marry her fiancé, Murat Gezer, on April 14. They are pictured below.

The AP reported that investigators found the black box from the plane, owned by the private holding company of Mina's millionaire father, Huseyin Basaran, on Monday.

Huseyin Basaran is the chairman of Basaran Investment Holding. According to the Evening Standard, he owns "several small businesses and a small investment bank" and is involved in construction projects such as series of luxury apartment blocks in Istanbul called Mina Towers, named after his daughter.

Mina Basaran, a socialite who had more than 85,000 followers on Instagram, was reportedly on the management board at her father's company and was next in line to run the business.

She had posted several photos on her Instagram account, which has now been made private, over the weekend, including an image of herself on the tarmac in front of the plane and another on board holding heart-shaped balloons. Her Facebook account has been changed into a tribute page.

The plane 'dropped drastically within minutes'

According to flight-tracking website FlightRadar24, the aircraft, which took off from Sharjah International Airport, near Dubai, on Sunday, rapidly gained altitude a little over an hour into the flight and then "dropped drastically within minutes."

While it is unknown what caused the crash, a witness told Iran's state television that the plane was on fire while in the air.

Medics and rescuers evacuating the body of a victim killed in the crash. Tasnim News Agency / Reuters

The black box could help investigators determine the cause of the crash, as the equipment typically records cockpit conversations and radio transmissions.