Robert Bowling has departed Call of Duty: Modern Warfare developer Infinity Ward and severed ties with publisher Activision.

Bowling held the role of Creative Strategist on Call of Duty and was the public face of the Modern Warfare series following the controversial dismissal of Infinity Ward executives Jason West and Vince Zampella.

Bowling’s surprise announcement was made public over twitter: “Today, I resign from my position as Creative Strategist of Call of Duty, as a lead of Infinity Ward, and as an employee of Activision.”

While Bowling’s tweet appears to be rather perfunctory, Activision replied to the news, stating, “We sincerely thank Robert for his many years of service. He’s been a trusted and valued member of the Infinity Ward team. We wish him all the best on his decision to pursue future opportunities.”

Bowling has not announced his future plans.