New Delhi, Aug. 6 -- 'The Walking Dead' actress Kelly Mack has passed away at the age of 33 in her hometown of Cincinnati.

According to Deadline, she had been battling glioma of the central nervous system.

Her sister confirmed the sad news on social media, writing, "It is with indelible sadness that we announce the passing of our dear Kelley. Such a bright, fervent light has transitioned to the beyond, where we all eventually must go."

A glioma is a type of brain tumour that develops from the glial cells in the brain or spinal cord. The World Health Organisation (WHO) classifies gliomas into grades 1 through 4, with higher grades indicating greater aggressiveness.

While gliomas can occur at any age, they are more common in adults. Sym...