A 27-year-old Emmy-winning ABC News producer died Friday night after suffering from health issues for months, the network announced.

Alexa Valiente worked with the network for six years, serving on shows including Nightline, 20/20 and Popcorn with Peter Travers, ABC News said in a statement. The circumstances surrounding Valiente's death are unclear, but the network said her passing came as a surprise to those in the newsroom who knew her well.

"Always a friendly face in the halls, she had an upbeat spirit, a curious and brilliant mind and a real passion to see the world," ABC News president James Goldston said. "She will be deeply missed."