The two flights, United Airlines Flight 1724 and Delta Air Lines Flight 1070 came too close to each other while arriving at the airport.

The planes, carrying more than 350 people, experienced "a loss of required separation" while preparing to land at the same Phoenix airport, the FAA said.

Amazon halts drone deliveries in Texas and Arizona, citing possible safety concerns with its MK30 drone software.

The pilots talked to air traffic controllers who appear to have directed the planes to "resequence," and flight data appears to show both making a circle before landing safely.

Amazon has paused all drone deliveries in Arizona.Currently, Amazon’s Tolleson, Arizona, facility and College Station, Texas, facility are the only ones in the country that offer Air Prime.Air Prime uses autonomous drones to deliver packages weighing up to 5lbs to customers in 30 minutes or less.

The Federal Aviation Administration is investigating a narrowly missed midair collision between a United flight and a Delta flight at Phoenix Sky Harbor International Airport on Saturday, the agency said.

An Amazon spokesperson said an incident that involved a crash at a testing facility in Oregon was not the primary reason for the pause.

The aircraft landed safely and the incident is being investigated by the Federal Aviation Administration (FAA), officials said.

Amazon's drone delivery pauses in Texas and Arizona due to software fix after two crashes. Industry expects business to be $10B by decade's end.

The e-commerce industry continues to surprise with its ongoing transformations, particularly in the area of logistics. Recently, Amazon temporarily suspended its commercial drone delivery operations in Texas and Arizona after two of its latest MK30 models crashed at a testing facility during light rain.

At this juncture, it should only take a few more months for the final assembly and flight certification paperwork to be finished.

The company said Friday it was immediately suspending drone deliveries in Texas and Arizona to fix the aircraft’s software.