Mad Men star Robert Morse dies aged 90 after glittering career on screen and stage

Mad Men actor Robert Morse has died aged 90, his son has revealed.

The actor, who is best known for his role as Bertram Cooper in the drama series, passed away on Wednesday night.

His cause of death is not known, according to ABC7.

While known for playing the senior partner in the hit series Mad Men, Robert had an illustrious career in Hollywood.

He was known for How to Succeed in Business Without Really Trying in which he both starred in the 1961 original Broadway production, for which he won a Tony Award, and the 1967 film adaptation.

Tributes flooded in for Robert on social media after news broke of death.