Director Lynn Shelton, who has directed popular TV shows including Mad Men, Fresh Off the Boat, The Mindy Project and GLOW, died of an unidentified blood disorder at 54 in Los Angeles.

Actor Mark Duplass, who starred in Shelton's 2009 film Humpday, shared the news on Twitter with a picture whose caption read, "We lost our dear friend Lynn Shelton. We made so many things together. I wish we had made more. Her boundless creative energy and infectious spirit were unrivaled. She made me better. We butted heads, made up, laughed, pushed each other. Like family. What a deep loss." Filmmaker Ava DuVernay, who won the directing award in the U.S. dramatic competition at the 2012 Sundance Film Festival for her second feature film Middle of Nowhere, mourned Shelton's loss. "She announced my name with pride. Handed it to me with love. Rooted for me long after. I can't believe I'm typing this. Rest In Peace, Beauty. Thank you for your films. And for your kindness," Ava's note read.

Apart from directing several TV shows, Lynn Shelton also directed the films Sword of Trust, Outside In and Your Sister's Sister, which were critically acclaimed.