Brazilian President Jair Bolsonaro was hospitalized on Monday with an intestinal blockage and may need to undergo surgery in the latest complication from a 2018 stabbing.

Bolsonaro said he started feeling unwell on Sunday afternoon after lunch, and doctors have inserted a nasogastric tube.

“More tests will be conducted for a potential surgery on an internal obstruction in the abdominal region,” Bolsonaro posted on Twitter, along with a photo of himself giving a thumbs-up in his hospital bed.

Bolsonaro said it was the second hospitalization “with the same symptoms” since he was stabbed during a September 2018 campaign event and