Stephen Amell is standing by his female co-stars and crew members after 19 cases of sexual harassment against "Arrow" and "Supergirl" executive producer Andrew Kreisberg were made public last week.

On Monday, the "Arrow" star held a Facebook Live session where he addressed the scandal and expressed his support for his female co-stars. According to Amell, Warner Bros. is already investigating the matter.

"I thought it was appropriate before I spoke to you, or before I spoke publicly, to speak with our cast and our crew, which I got the chance to do this morning," Amell said in the clip.  "I certainly can't pontificate in an eloquent or such a succinct manner like ['Arrow'] Emily [Bett Rickards] did, like ['Supergirl' Melissa Benoist] did, like ['Legends of Tomorrow'] Caity Lotz did. I stand behind and fully support everything that they said."

"Our biggest strength is working on it as a team," Amell continued. "I think we can do this because we promote and champion a safe and progressive work environment. I told them this morning, and I tell you now -- and I meant it -- that if anyone ever feels anything less than 100 percent safe, or anyone feels as though they aren't allowed to express themselves and be the person that they are, that they should come to whomever they're supposed to go to, and I'll stand right beside them, right behind them. I'll speak on their behalf if need be."

Like Amell, Benoist also voiced out her support for the victims on Sunday. The "Supergirl" star took to Instagram to confess that the industry she is working in does not always mirror "equality and feminism." The actress added that she is an optimist and believes that change is possible.

"I'll head back to work on 'Supergirl' even more committed 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," Benoist wrote.

Kreisberg, one of the executive producers of CW shows like "Arrow," "Supergirl," "Flash" and "DC's Legends of Tomorrow," has strongly denied all the allegations. Warner Bros. has already suspended the EP while they conduct an internal investigation over the matter, Variety reported.

Arrow "Arrow" star Stephen Amell showed support to his female co-stars and crew on Facebook Live amidst EP's sexual misconduct. Photo: The CW