At least three people were killed at Cappadocia, a popular tourist destination in central Turkey, when a rockfall occurred Thursday, officials said.

The rockfall took place at around 3:15 p.m. local time that day, according to Reuters.

After the area experienced heavy rain, the rockfall came from a volcanic geological formation called a "fairy chimney," the same source said.

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The name comes from the tall, narrow, often cone-shaped rock formations that resemble chimneys, with the "fairy" reference tied to local folklore.

Rock fragments from the fairy chimney broke off and fell onto people near the Goreme Open-Air Museum, Nevsehir Gov. Huseyin Kok told reporters.

Three people died and five were injured, according to The Associated Press.

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"We hope that there are no other casualties," Kok said, according to AP. 

"We are deeply saddened."

Kok said two of the three people killed were Turkish nationals but did not provide information about the third individual, the AP reported.

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It is unclear whether the dead and injured were tourists, employees or others.

Rescue teams were searching through rubble at the rockfall, according to the governor.

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Cappadocia, located in central Turkey, southeast of the capital Ankara, is known for its distinctive fairy chimneys, cave dwellings and ancient rock-cut churches.

The tragedy follows other fatal accidents involving tourists at popular destinations this month.

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Earlier in October, a 55-year-old Brazilian tourist was fatally struck in the head by a piece of roofing material that blew off during strong winds while he was visiting Taliesin West, a historic Arizona landmark designed by famed architect Frank Lloyd Wright.

Also in October, a 36-year-old American tourist died after falling approximately 1,000 feet down a steep mountain slope in Italy's Dolomites while vacationing with her family.

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Reuters and The Associated Press contributed reporting.

Three people were killed when two helicopters collided midair near an Oregon airport Thursday afternoon, crashing in a field and prompting authorities to close a nearby highway.

A Robinson R22 helicopter and an Airbus H125 helicopter collided near McMinnville Municipal Airport around 2:15 p.m. local time, the Federal Aviation Administration (FAA) confirmed in a statement to Fox News Digital.

The Yamhill County Sheriff's Office confirmed Thursday that all three people aboard both helicopters died in the crash.

The two victims aboard the Robinson R22 helicopter were identified as 22-year-old flight instructor Maddie Aasbo, of Texas, and a student pilot from the United Kingdom, according to the sheriff's office. The student's identity is being withheld pending notification of next of kin.

The sole occupant of the Airbus helicopter was identified as Tyler Delane Sturdevant, 38, of Newberg, Oregon.

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The collision occurred in a field off Oregon Route 233, about one mile west of Dayton, according to Oregon Department of Transportation spokesperson Mindy McCartt.

McCartt told Fox News Digital that the highway and some nearby county roads were closed at the request of emergency responders. She said there was no estimated reopening time.

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McMinnville Airport Manager John Paskell told Fox News Digital that the collision occurred off airport property and did not disrupt airport operations. The airport remained open without closures or restrictions.

Paskell said he understood that both helicopters were based at the airport but could not confirm what activities they were conducting or how the collision occurred.

The FAA and National Transportation Safety Board (NTSB) responded to the scene and are leading the ongoing investigation into the collision, according to the sheriff's office.

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The cause of the collision has not been determined.

The Yamhill County Sheriff's Office and NTSB did not respond to Fox News Digital's requests for comment.