Katie Couric's producers were doused with a concoction of urine and mud last Saturday as they were covering the violent rally in Charlottesville, Va., the journalist explained on Friday.

"Observing the rising battle of protest chants, two of my producers were standing on an elevated edge of the park when suddenly they were doused with a concoction of human urine and mud," Couric wrote in an op-ed published by National Geographic. "It was thrown into the air over the crowd from what they think was a water bottle."

Couric's brief description of the incident goes into further details than her tweet about it last Saturday, when she first revealed that a urine bomb hit two of her co-workers.

Two of my producers just got sprayed with urine. Lovely. Hard to keep your cool. — Katie Couric (@katiecouric) August 12, 2017

The op-ed, titled "Being in Charlottesville broke my heart. It also filled me with hope," explores the inner-workings of Couric's mind following her three days in Charlottesville filming a six-hour documentary series for National Geographic "examining the pivotal social, demographic, and cultural changes that are currently tearing us apart."

Couric said her team also witnessed opposing demonstrators throw feces at one another.