Senator John McCain is hospitalized in Arizona and underwent surgery after contracting an intestinal infection. The senator was diagnosed with brain cancer last summer.

“On Sunday, Senator McCain was admitted to Mayo Clinic in Phoenix, Arizona, and underwent surgery to treat an intestinal infection related to diverticulitis,” his office said.

“Over the last few months, Senator McCain has been participating in physical therapy at his home in Cornville, Arizona, as he recovers from the side effects of cancer treatment. He has remained engaged on his work as Chairman of the Senate Armed Services Committee and has enjoyed frequent visits from his family, friends, staff and Senate colleagues.”

Meghan McCain tweeted an update, saying, “My father @SenJohnMcCain is in stable condition – he continues to inspire me everyday with his intense grit and determination. Thank you to the doctors at Mayo Clinic in Phoenix and to everyone who is praying for him.”

Get well, John!