(Reuters) - The Mexican government on Sunday condemned the fatal shooting of a Mexican citizen over the U.S. border by a U.S. agent. The victim was hit by a single bullet on Saturday, close to the Tomates-Veterans border crossing in Matamoros, over the river from Brownsville, Texas, Mexico's Foreign Relations Ministry said in a news release. The shot was fired by a U.S. Border Patrol agent, the ministry said in the release."The Mexican government has reiterated that the disproportionate use of lethal force in immigration control is unacceptable under any circumstances," it said.