NPR’s senior vice president of news Michael Oreskes resigned on Wednesday amid allegations of sexual harassment and improper behavior in his past.

“I am deeply sorry to the people I hurt. My behavior was wrong and inexcusable, and I accept full responsibility,” Oreskes said in an internal memo obtained by CNN.

“To my colleagues, I am grateful for every minute I’ve had to work with each of you,” he said. “NPR has an important job to do. Public radio matters so much and I will always be your supporter.”

Oreskes came under pressure to step down after The Washington Post reported that he allegedly made unwanted sexual advances toward two journalists who were seeking jobs at The New York Times two decades ago.