The attack against a conservative senator, Miguel Uribe Turbay, has shaken a nation that has struggled to move past its long history of political violence.

The assault took place on Saturday in a park as the country gears up for next year’s presidential election. Uribe, a 39-year-old senator, was shot twice – in the head and the chest, according to Colombia’s Attorney General’s Office. The suspect is a 15-year-old who is in custody.