SALEM, Ore. (AP) — Oregon Secretary of State Dennis Richardson says he will remain in office after being diagnosed with brain cancer.

Richardson announced the diagnosis Wednesday in a statement. Richardson said he was optimistic, and that the discovery, made in May, had caught the disease early.

In a short video posted on social media, Richardson, who is 68, emphasized that he would continue in his official capacity, and would be working a full schedule.

"I am going to continue, I absolutely will fulfill my responsibilities," Richardson said. "Everything is going to be working as far as our scheduling is concerned."

The video was recorded live on Facebook, but Richardson did not respond to questions during the broadcast about what type of treatment he would undergo, and did not speak about his prognosis.

Debra Royal, Richardson's chief of staff, confirmed in a phone call after the video was posted Richardson had already begun treatment.

The 68-year-old Republican was a six-term member of the Oregon House before being elected to statewide office in 2016. He is currently the only Republican holding statewide office in Oregon, with a term ending in January 2021.