Relative: Passenger In Northwest OKC Plane Crash Dies

One person died Monday morning after suffering injuries in a northwest Oklahoma City plane crash over the weekend.

A relative of passenger Brent Waguespack confirmed his death to News 9.

Waguespack and the plane's pilot, Chad Detwiler, were injured after the plane went down Saturday near Northwest Expressway and Sara Road in Oklahoma City.

Related: Pilot, Passenger Of NW Oklahoma City Plane Crash Identified

Detwiler remains in critical condition at this time.

This is a developing story.