BOGOTA (Reuters) -Colombian Senator Miguel Uribe, a potential presidential contender, is in critical condition and has shown little response to treatment after being shot in Bogota on Saturday, the hospital treating him said in a statement on Monday.

Colombian presidential hopeful Miguel Uribe is “fighting for his life” after being shot during a campaign rally in the capital, Bogota. The assault took place on Saturday in a park as the country gears up for next year’s presidential election.

Top U.S. and Chinese officials will sit down in London on Monday for talks aimed at defusing the high-stakes trade dispute between the two superpowers that has widened in recent weeks beyond tit-for-tat tariffs to export controls over goods and components critical to global supply chains.