Brazilian President Jair Bolsonaro was hospitalized early Monday for an intestinal obstruction. The news comes more than three years after he was stabbed in the abdomen while campaigning for president.

Bolsonaro, 66, went for testing Monday at Vila Nova Star Hospital in Sao Paulo after claiming to have abdominal discomfort and while vacationing at a beach in the state of Santa Catarina.

"After feeling abdominal discomfort, the president was admitted to Vila Nova Star hospital in Sao Paulo early Monday to undergo examinations," his office said in a statement. "The president is doing well. Further details will be released after his medical bulletin is updated."

The hospital said Bolsonaro is in stable condition, but that he may need surgery. A photo posted on Bolsonaro’s Twitter account shows him lying in a hospital bed and holding a thumbs up.

“I started to feel sick after Sunday lunch. - I arrived at the hospital at 3:00 am today. - They put me in a nasogastric tube. - More tests will be done for possible surgery for internal obstruction in the abdominal region,” Bolsonaro wrote with the photo.

Despite warnings from health officials, Bolsonaro has maintained an active lifestyle since he was stabbed in the abdomen. He has been seen swimming and attending motorcycle rallies.