Apple Inc. co-founder Steve Wozniak told ABC News that he had “minor but real stroke” while attending the World Business Forum in Mexico City, confirming reports from Wednesday.

Wozniak told the news outlet that he felt dizzy in the morning while working on his computer, followed by a bout of vertigo, and couldn’t walk. At the hospital, an MRI test showed that he’d had a stroke, the technologist told ABC via text message. Wozniak said he’s no longer in the hospital and flying back to the US.