Thousands of Guatemalans Sunday marched through the capital to demand the resignation of President Alvaro Colom over the killing of a lawyer, informs BBC News Monday.
Before his death lawyer Rodrigo Rosenberg recorded a video saying that if he was found dead the President and his aides would be responsible.
The tape was released the day after the 47-year-old he was shot dead on 10 May.
Mr Colom has denied involvement in the killing, and his supporters staged a rival demonstration in Guatemala City.
President Colom, the central American country’s first left of centre leader for half a century, has called on the US Federal Bureau of Investigation and a United Nations panel to investigate.
Mr Rosenberg alleges that he would have been killed because of his links to a client, a prominent businessman, who was killed in March with his daughter.
In the video Mr Rosenberg calmly says: “If you are watching this message, it is because I was assassinated by President Alvaro Colom with help from Gustavo Alejos.”
He was shot dead a few days later while riding a bicycle.
Demonstrations by both sides over the week have been escalating the crisis which analyst say could threaten Guatemala’s fragile democracy.