Miami, Florida - The two pilots of an Amazon cargo plane that overran the runway while landing at Miami International Airport, striking a van and killing five people, have been released from the hospital, officials said Tuesday.

Three people remain hospitalized, two in critical condition and one stable, following Sunday's accident, Miami-Dade Sheriff Rosie Cordero-Stutz said at a press conference.

Cordero-Stutz said the National Transportation Safety Board (NTSB) was leading the investigation into the accident while the Miami-Dade Sheriff's Office would conduct its own inquiry into the deaths on the ground.

NTSB chief Jennifer Homendy said Monday that officials have recovered the flight data and cockpit voice recorders from the plane, which tore through a perimeter fence and slammed into two vehicles.

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The five fatalities were in a cleaning-services van struck by the plane.

Homendy said the plane came to a halt about 1,300 feet past the end of the paved runway surface.

Hundreds of flights were delayed at Florida's busiest airport following the crash.

Homendy said the plane was a Boeing 767-300 built in 1994 and operated by 21 Air LLC, based in Miami and contracted to Amazon. It was on its third flight of the day, and was arriving from San Juan, Puerto Rico.