Karl Soderlund, Avaya’s U.S. channel chief, will leave the company as of March 7, according to a leaked internal memo.

CRN reported that Soderlund is leaving the company to pursue “outside opportunities; however, the official reason for his sudden departure is unknown.”

Soderlund has held his position as vice president at Avaya just shy of two years. Richard Steranka, vice president of Avaya’s Global Partner Organization, will be in charge of running Soderlund’s team until a permanent replacement is found.

Soderlund’s departure is the third executive loss that the company has faced in the past year. Avaya’s worldwide channel chief John Spiliotis left last July for a position at Palo Alto Networks, and senior vice president of Global Sales Tom Mitchell also announced his departure in September.

Avaya has not issued any kind of official release about the resignation aside from confirming the news to CRN. Soderlund’s LinkedIn page still lists him as the VP of channel sales at Avaya, but he posted the CRN article on his Facebook page.