New York Giants president and CEO John Mara announced on Monday that he was diagnosed with cancer.

"I have recently been diagnosed with cancer and have been following the treatment plan recommended by an outstanding team of doctors. I'm feeling strong and optimistic,” Mara wrote in a statement.

Mara, 70, says he plans to remain active with the team throughout his treatment.

“I'm fortunate to be surrounded by incredible support—personally, professionally, and medically,” Mara wrote. Mara did not disclose what type of cancer he had.

The Mara family has owned the Giants since the team was founded in 1925.

This is a developing story. Stay tuned to News 12 for updates.