There is no more mystery about which astronaut suffered a medical issue aboard the International Space Station last month, prompting NASA’s first-ever medical evacuation.

Astronaut Mike Fincke, 58, has identified himself as the one who was in need of help in a statement published by NASA on Wednesday.

“On Jan. 7, while aboard the International Space Station, I experienced a medical event that required immediate attention from my incredible teammates,” Fincke said in the statement.

Fincke said he’s “doing very well” and is still undergoing “post-flight reconditioning,” though he did not specify what health issue prompted the need for medical evacuation.