Former President Joe Biden is undergoing a new phase of treatment for an aggressive form of cancer that was diagnosed in May, a spokesperson said Saturday.

"As part of a treatment plan for prostate cancer, President Biden is currently undergoing radiation therapy and hormone treatment," according to the spokesperson for the former president.

Stream Los Angeles News for free, 24/7, wherever you are. WATCH HERE

The radiation treatment is expected to span five weeks and marks a new point in his care, a source familiar told NBC News. He has already been taking a pill form of hormone medication.

Last month, Biden, 82, also had a skin cancer treatment known as Mohs surgery. A large bandage on his forehead was visible in public appearances at that time.

Following that procedure, his

See Full Page