On Wednesday, Los Angeles Chargers general manager Tom Telesco told reporters that veteran offensive tackle Russell Okung has been dealing with a “pretty serious medical issue” since early June.

He didn’t offer much more, though Okung was placed on the non-football injury list.

On Thursday morning, Okung offered some scary details.

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Los Angeles Chargers tackle Russell Okung revealed that he is recovering from a pulmonary embolism in June. 

A pulmonary embolism is a blockage in one of the pulmonary arteries in the lungs.

Flip the Page to Hear his statement: