After an investigation into allegations of sexual harassment and other inappropriate behavior including a “toxic” writers’ room environment, Supergirl and The Flash co-showrunner and Executive Producer Andrew Kreisberg has been officially dismissed by the Warner Bros. TV Group.

Kreisberg had been accused by multiple people and had been suspended by the studio three weeks ago while they would conduct investigations. The situation caused many actors across the Arrowverse to speak out about and denounce this kind of behavior, with Supergirl’s Melissa Benoist specifically pledging to commitment to “being part of changing the norm by listening when people speak up, and refusing to accept an environment that is anything less than a safe, respectful and collaborative space.” Others, including Benoist’s Supergirl costar Chris Wood and Arrow’s Emily Bett Rickards and Stephen Amell, were among those to express themselves publicly about the situation, supporting those who have spoken out.

“After a thorough investigation, Warner Bros. Television Group has terminated Andrew Kreisberg’s employment, effective immediately,” Warner Bros. TV in a statement. “Greg Berlanti will assume additional responsibilities on both The Flash, where he will work closely with executive producer/co-showrunner Todd Helbing, and Supergirl, where he will work closely with executive producers/co-showrunners Robert Rovner and Jessica Queller. We remain committed to providing a safe working environment for our employees and everyone involved in our productions.”

Berlanti Productions’ Greg Berlanti and Sarah Schechter also released a statement of their own.

“Warner Bros. Television Group recently concluded its investigation into the allegations against Andrew Kreisberg. We encouraged and supported this investigation, we believe and support the individuals who came forward, and we agree with the studio’s decision. Nothing is more important to us than the safety and well-being of all our colleagues — coworkers, crew and staff alike,” it read.

A major architect of the Arrowverse, Kreisberg had been working with Berlanti on DC TV since before even Arrow; a Booster Gold TV project for Syfy was mooted in 2011 but ultimately never happened. As things stand, with Berlanti stepping in, the four series that Kreisberg had any involvement with will continue to go on as planned.