A midair collision between two small planes at a regional airport in Arizona killed at least two people on Wednesday, authorities said.

The deadly collision occurred at the Marana Regional Airport, northwest of Tucson, the Marana Police Department said.

Authorities confirmed that at least two people were killed, though they noted that details were limited as first responders were still working the scene.

The planes that collided midair were identified as a Cessna 172S and a Lancair 360 MK II, both fixed-wing, single-engine aircraft, the National Transportation Safety Board (NTSB) said. The agency said it is investigating the incident.

A Delta Air Lines flight from Minneapolis crashed and overturned while landing at Toronto Pearson Airport on Monday afternoon. No one was killed, though authorities said 21 passengers on board the aircraft suffered injuries ranging from minor to critical.

In the deadliest U.S. aviation disaster since 2001, an Army helicopter and an American Airlines flight coming in to land at Washington’s Ronald Reagan National Airport on Jan. 29 collided midair, killing all 67 people aboard the two aircraft.

Other recent aviation disasters in North America include a small commuter plane on its way to Nome, Alaska, that crashed on Feb. 6, killing the pilot and nine passengers. Additionally, 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. 

Following the incident at Reagan National Airport, the Trump administration has promised a thorough review and update of air traffic control systems nationwide.

Fox News Digital’s Danielle Wallace and Sarah Rumpf-Whitten contributed to this report.