The actress best known for voicing the unseen Mrs Wolowitz on The Big Bang Theory has died.

Carol Ann Susi's agent, Pam Ellis-Evenas, says the actress died in Los Angeles yesterday after a brief battle with cancer, aged 62.

On The Big Bang Theory, she wasn't seen on camera as the mother of Simon Helberg's character, Howard, but her character's loud voice with a Brooklyn accent was instantly recognisable.