Doctors treating Colombian presidential hopeful Miguel Uribe Turbay have warned that he is in an "extremely critical condition" after being shot in the head 10 days ago.
Uribe underwent emergency surgery on Monday to stem a bleed to the brain, according to a hospital statement.
His wife said that the hours after the operation would be critical and asked Colombians to pray for his recovery.
The June 7 attack on Uribe has shocked Colombians, who turned out in their tens of thousands to attend silent protests held across the country on Sunday.
"Miguel continues to fight for his life like never before," his wife, María Claudia Tarazona, said outside Santa Fe hospital, where he is being treated.
