Colombian Senator Miguel Uribe Turbay, a possible candidate in the country's presidential election next year, was shot and wounded at a campaign rally in Bogota on Saturday, authorities said.

His conservative Democratic Centre party released a statement calling it an 'an unacceptable act of violence.' The attack took place in a park in the Fontibon neighbourhood when armed assailants shot him from behind, his party said.

Images circulating on social media showed Uribe Turbay covered in blood, apparently with a head wound, being held by several people. So far, no official report has been released on the senator's condition.