Vincent Kartheiser.Photo: Jason Merritt/WireImage

Vincent Kartheiser

The insider says the relevant parties were interviewed and the investigation concluded that Kartheiser’s actions didn’t rise to the level of termination, but did warrant the studio to counsel him on behavioral matters.

A second investigation into Kartheiser was launched weeks later — just as production was coming to an end — after the studio received a new complaint about him, according to the source.

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The studio’s Labor Relations department again investigated the complaint, though this time it concluded with a representative being assigned to the set to monitor activities, insider says.

The source tells PEOPLE that both investigation were conducted remotely due to COVID-19 restrictions preventing investigators from traveling internationally to theTitans' set in Canada.

A representative for Kartheiser did not immediately respond to PEOPLE’s request for comment, though a spokesperson for the actortoldDeadline— who was first to report the investigations — that he “vehemently denies the allegations” against him.

“Warner Bros investigated this matter and made clear to Mr. Kartheiser its expectations for behavior on the set, and he agreed to comply with their directives,” the rep said.

Vincent Kartheiser.Michael Kovac/Getty

Vincent Kartheiser

Kartheiser is best known for playing Pete Campbell onMad Men.He’s been married to actress Alexis Bledel since 2014.

According toDeadline, he signed onto the show on a one-year deal and is not expected to return if the series is renewed for a fourth season.

source: people.com