A woman fell from the 19th floor of a downtown Dallas apartment building and died Sunday.

Early Sunday morning, 25-year-old Christine Frenzel of Dallas, and some other people were visiting a friend who lived in Davis Building, located at 1309 Main Street, said Michael Frenzel, her older brother.

Her friends said that she fell from the 19th floor when switching the position of her legs. One said, Christine “was sitting on a ledge of some sort and was swaying over the edge and lost her balance.”

Her body was found on the sidewalk at 2:15 a.m. near the building.

“It’s our understanding it was an accident,” Michael said.

There is no indication that a broken window, broken patio or other facility problem contributed to the fall said Elizabeth Tooke, Davis Building’s community manager.

Christine Frenzel grew up with her two brothers in University Park. She is a graduate from the Shelton School and attended college at the University of Denver. She later transferred to the Art Institute of Dallas, where she graduated with a bachelor’s degree in interior design.

Police continues investigating the cause of the fall.