The U.S. State Department revoked the travel privileges of two Honduran election officials over one of Central America’s most hotly contested presidential races.

The department revoked the U.S. visa of Mario Morazán, a magistrate with Honduras’s Electoral Justice Tribunal, and denied a visa application by Marlon Ochoa, a member of the National Electoral Council, who are both connected to the ruling Liberty and Refoundation (LIBRE) party. 

U.S. officials said their actions "undermining" democratic processes and regional stability, according to the Associated Press.

The visa sanctions took place about three weeks after the November 30 presidential election. There has not been a certified winner announced with the ballot count delayed repeatedly due to inconsistencies in tally sheets as well as protests.

The frontrunners in the tightly contested race are conservative former Tegucigalpa mayor Nasry Asfura and center-right contender Salvador Nasralla, with preliminary tallies showing Asfura narrowly ahead. The LIBRE candidate, Rixi Moncada, trails in third and refuses to accept the current results, alleging irregularities in the ballot counting process.