A midair collision involving two small planes in southern Arizona killed at least two people Wednesday morning, authorities said.

Federal air-safety investigators said two people were aboard each plane when they collided near Marana Regional Airport on the outskirts of Tucson.

One plane landed uneventfully and the other hit the ground near a runway and caught fire, the National Transportation Safety Board said, based on preliminary information before its investigators had arrived.

The Marana Police Department confirmed two deaths after responding to the crash. The Associated Press left a message with a police spokesperson seeking additional details.

Last week in Arizona, one of two pilots died on a private jet owned by Mötley Crüe singer Vince Neil after the aircraft veered off a runway in Scottsdale and hit a business jet.

Four major aviation disasters have occurred in North America in the last month. The most recent involved a Delta jet that flipped on its roof while landing in Toronto and the deadly crash of a commuter plane in Alaska.

In late January, 67 people were killed in a midair collision in Washington, D.C., involving an American Airlines passenger jet and an Army helicopter, marking the United States’ deadliest aviation disaster since 2001. Just a day later, a medical transport jet with a child patient, her mother and four others aboard crashed into a Philadelphia neighborhood on Jan. 31, exploding in a fireball that engulfed several homes. That crash killed seven people, including all those aboard, and injured 19 others.

The airport in Marana has two intersecting runways but operates without an air traffic control tower.

A multimillion-dollar project was underway to build a tower but delays due to the COVID-19 pandemic pushed back construction. Tens of thousands of flights arrive and depart from the airport annually.

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This story has been corrected to reflect that 67 people total were killed in the Washington, D.C., collision, rather than 67 people aboard the American Airlines jet.

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Lee reported from Santa Fe, New Mexico, and Govindarao reported from Phoenix. Associated Press journalist Susan Montoya Bryan in Albuquerque, New Mexico, also contributed.